diff --git a/flash.sh b/flash.sh
old mode 100644
new mode 100755
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/alias.h b/keyboards/keebio/iris_lm/keymaps/drew/alias.h
index 002b9d91..6faa0d6c 100644
--- a/keyboards/keebio/iris_lm/keymaps/drew/alias.h
+++ b/keyboards/keebio/iris_lm/keymaps/drew/alias.h
@@ -1,7 +1,7 @@
 #pragma once
 
 #include QMK_KEYBOARD_H
-#include "./layers.h"
+#include "./layers/layers.h"
 
 /// @brief Custom keycodes.
 enum CustomKeycodes {
@@ -15,6 +15,8 @@ enum CustomKeycodes {
     LOW_0,
 
     MULT, // avoids a conflict with KC_ASTR
+
+    WIN_SWAP,
 };
 
 #define TD_CLS TD(TD_CAD_LOCK_SLEEP)
@@ -25,7 +27,6 @@ enum CustomKeycodes {
 #define MENU S(KC_F10)
 #define TAB_RIGHT C(KC_TAB)
 #define TAB_LEFT (C(S(KC_TAB)))
-#define WIN_SWAP 3 // TODO
 
 // layers
 // #define NUM_SPC LT(_NUM, KC_SPC)
@@ -36,10 +37,14 @@ enum CustomKeycodes {
 #define NUM_SPC LT(_NUM, KC_SPC)
 #define NAV MO(_NAV)
 #define NUM MO(_NUM)
-#define SYM MO(_SYM)
+#define SYM_ENT LT(_SYM, KC_ENT)
+#define GAME MO(_GAME)
 #define LAUNCH_NUM LT(_SH_NUM, LAUNCH)
 #define COMP_FUNC LT(_FUNC, COMPOSE)
 
+#define ZOOM_IN C(KC_EQL)
+#define ZOOM_OUT C(KC_MINS)
+
 // mod-taps (not homerow mods)
 // #define GUI_LAUNCH GUI_T(LAUNCH)
 
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/caps_word/caps_word.c b/keyboards/keebio/iris_lm/keymaps/drew/caps_word/caps_word.c
index f0989a0a..4280d6ec 100644
--- a/keyboards/keebio/iris_lm/keymaps/drew/caps_word/caps_word.c
+++ b/keyboards/keebio/iris_lm/keymaps/drew/caps_word/caps_word.c
@@ -1,5 +1,4 @@
 #include QMK_KEYBOARD_H
-#include "caps_word.h"
 #include "../alias.h"
 #include "../tap_dance/tap_dance.h"
 
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/caps_word/caps_word.h b/keyboards/keebio/iris_lm/keymaps/drew/caps_word/caps_word.h
deleted file mode 100644
index 228a94ad..00000000
--- a/keyboards/keebio/iris_lm/keymaps/drew/caps_word/caps_word.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#pragma once
-#include "stdint.h"
-
-bool caps_word_press_user(uint16_t keycode);
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/chordal_hold/chordal_options.c b/keyboards/keebio/iris_lm/keymaps/drew/chordal_hold/chordal_options.c
deleted file mode 100644
index 1d03d38e..00000000
--- a/keyboards/keebio/iris_lm/keymaps/drew/chordal_hold/chordal_options.c
+++ /dev/null
@@ -1,15 +0,0 @@
-// TODO: possibly remove
-
-#include "../alias.h"
-
-bool get_chordal_hold(
-    uint16_t tap_hold_keycode, keyrecord_t* tap_hold_record, uint16_t other_keycode,
-    keyrecord_t* other_record
-) {
-    switch (tap_hold_keycode) {
-        case SFT_D:
-        case SFT_K: // no same hand stuff for shift
-            return get_chordal_hold_default(tap_hold_record, other_record);
-    }
-    return true; // allow same hand stuff for everything else
-}
\ No newline at end of file
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/chordal_hold/chordal_options.h b/keyboards/keebio/iris_lm/keymaps/drew/chordal_hold/chordal_options.h
deleted file mode 100644
index e4cdc9b3..00000000
--- a/keyboards/keebio/iris_lm/keymaps/drew/chordal_hold/chordal_options.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-
-#include QMK_KEYBOARD_H
-#include "stdint.h"
-
-bool get_chordal_hold(
-    uint16_t tap_hold_keycode, keyrecord_t* tap_hold_record, uint16_t other_keycode,
-    keyrecord_t* other_record
-);
\ No newline at end of file
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/combos/combos.c b/keyboards/keebio/iris_lm/keymaps/drew/combos/combos.c
new file mode 100644
index 00000000..deab27f1
--- /dev/null
+++ b/keyboards/keebio/iris_lm/keymaps/drew/combos/combos.c
@@ -0,0 +1,50 @@
+#include "./combos.h"
+#include "../alias.h"
+#include "../layers/layers.h"
+
+uint16_t get_combo_term(uint16_t combo_index, combo_t *combo) {
+    switch (combo_index) {
+        case NumCombo:
+            return 75;
+            break;
+    }
+    return COMBO_TERM;
+}
+
+bool process_combo_key_release(
+    uint16_t combo_index, combo_t* combo, uint8_t key_index, uint16_t keycode
+) {
+    switch (combo_index) {
+        case NumCombo: // release the combo on any releases
+            switch (keycode) {
+                case SYM_ENT:
+                    layer_off(_SYM);
+                    break;
+                case NAV:
+                    layer_off(_NAV);
+                    break;
+            }
+            layer_off(_NUM);
+            break;
+    }
+    return false;
+}
+
+bool process_combo_key_repress(
+    uint16_t combo_index, combo_t* combo, uint8_t key_index, uint16_t keycode
+) {
+    switch (combo_index) {
+        case WinSwapCombo:
+            switch (keycode) {
+                case TAB_LEFT:
+                    tap_code16(S(KC_TAB));
+                    break;
+                case TAB_RIGHT:
+                    tap_code(KC_TAB);
+                    break;
+            }
+            return true;
+            break;
+    }
+    return false;
+}
\ No newline at end of file
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/combos/combos.h b/keyboards/keebio/iris_lm/keymaps/drew/combos/combos.h
new file mode 100644
index 00000000..e69a27af
--- /dev/null
+++ b/keyboards/keebio/iris_lm/keymaps/drew/combos/combos.h
@@ -0,0 +1,8 @@
+#pragma once
+
+#include QMK_KEYBOARD_H
+
+enum Combos {
+    NumCombo,
+    WinSwapCombo,
+};
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/config.h b/keyboards/keebio/iris_lm/keymaps/drew/config.h
index 0e59b003..48ffbdea 100644
--- a/keyboards/keebio/iris_lm/keymaps/drew/config.h
+++ b/keyboards/keebio/iris_lm/keymaps/drew/config.h
@@ -1,19 +1,21 @@
 #pragma once
 
-#include "./layers.h"
 
 #define TAPPING_TERM 200
 
 #define QUICK_TAP_TERM_PER_KEY
 
-#define HOLD_ON_OTHER_KEY_PRESS_PER_KEY
-#define PERMISSIVE_HOLD_PER_KEY
+#define HOLD_ON_OTHER_KEY_PRESS
+// #define PERMISSIVE_HOLD_PER_KEY
 #define TAPPING_TERM_PER_KEY
-// #define FLOW_TAP_TERM 150
-// #define CHORDAL_HOLD
+
+
+// combos
+#define COMBO_PROCESS_KEY_RELEASE
+#define COMBO_PROCESS_KEY_REPRESS
+#define COMBO_TERM_PER_COMBO
 
 #define CAPS_WORD_IDLE_TIMEOUT 0
 
 #define DUMMY_MOD_NEUTRALIZER_KEYCODE KC_RCTL
 #define MODS_TO_NEUTRALIZE {MOD_BIT(KC_LALT), MOD_BIT(KC_RALT), MOD_BIT(KC_LGUI), MOD_BIT(KC_RGUI)}
-
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/flow_tap/flow_tap_options.c b/keyboards/keebio/iris_lm/keymaps/drew/flow_tap/flow_tap_options.c
deleted file mode 100644
index 206ace4b..00000000
--- a/keyboards/keebio/iris_lm/keymaps/drew/flow_tap/flow_tap_options.c
+++ /dev/null
@@ -1,35 +0,0 @@
-#include QMK_KEYBOARD_H
-#include "../alias.h"
-
-uint16_t get_flow_tap_term(uint16_t keycode, keyrecord_t* record, uint16_t previous_keycode) {
-    switch (get_tap_keycode(previous_keycode)) {
-        case KC_A ... KC_Z:
-        case KC_DOT:
-        case KC_COMM:
-        case KC_SCLN:
-        case KC_SLSH:
-        case KC_QUOT: // enable flow-tap for these keys
-            break;
-        
-        default: // disable otherwise
-            return 0;
-    }
-
-    switch (keycode) {
-        case CTL_D:
-        case CTL_K:
-        case CTL_3:
-        case CTL_8:
-        case CTL_RBRC:
-        case CTL_DOWN: // control should always be allowed to hold
-
-        case GUI_LAUNCH: // same with non-homerow mod taps
-
-        case NUM_SPC:
-        case NAV_ENT:
-        case FUNC_PLAY: // same with layer-taps
-            return 0;
-            break;
-    }
-    return FLOW_TAP_TERM;  // enable flow-tap
-}
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/keymap.c b/keyboards/keebio/iris_lm/keymaps/drew/keymap.c
index ae752ef5..145392ba 100644
--- a/keyboards/keebio/iris_lm/keymaps/drew/keymap.c
+++ b/keyboards/keebio/iris_lm/keymaps/drew/keymap.c
@@ -1,27 +1,25 @@
 #include QMK_KEYBOARD_H
-#include "./caps_word/caps_word.h"
-#include "./layers.h"
-#include "./tap_dance/tap_dance.c"
+#include "./alias.h"
+#include "./combos/combos.h"
+#include "./layers/layers.h"
 #include "./tap_dance/tap_dance.h"
 #include "./utils/utils.h"
-#include "stdbool.h"
-#include "stdint.h"
-
-bool NAV_enabled = false;
+#include <stdbool.h>
+#include <stdint.h>
 
 // clang-format off
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 [_BASE] = LAYOUT(
 //┌───────────┬───────────┬───────────┬───────────┬───────────┬───────────┐                           ┌───────────┬───────────┬───────────┬───────────┬───────────┬───────────┐
-   TD_CLS,     KC_1,       KC_2,       KC_3,       KC_4,       KC_5,                                   KC_6,       KC_7,       KC_8,       KC_9,       KC_0,       KC_NO,
+   KC_F1,      KC_F2,      KC_F3,      KC_F4,      KC_F5,      KC_F6,                                  KC_F7,      KC_F8,      KC_F9,      KC_F10,     KC_F11,     KC_F12,
 //├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤                           ├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_NO,      KC_Q,       KC_W,       KC_E,       KC_R,       KC_T,                                   KC_Y,       KC_U,       KC_I,       KC_O,       KC_P,       KC_NO,
+   KC_ESC,     KC_Q,       KC_W,       KC_E,       KC_R,       KC_T,                                   KC_Y,       KC_U,       KC_I,       KC_O,       KC_P,       KC_BSPC,
 //├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤                           ├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_NO,      KC_A,       KC_S,       KC_D,       KC_F,       KC_G,                                   KC_H,       KC_J,       KC_K,       KC_L,       KC_QUOT,    KC_NO,
+   KC_TAB,     KC_A,       KC_S,       KC_D,       KC_F,       KC_G,                                   KC_H,       KC_J,       KC_K,       KC_L,       KC_SCLN,    KC_QUOT,
 //├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┐   ┌───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_NO,      KC_Z,       KC_X,       KC_C,       KC_V,       KC_B,       KC_MUTE,        QK_BOOT,    KC_N,       KC_M,       KC_COMM,    KC_DOT,     KC_SCLN,    KC_NO,
+   CW_TOGG,    KC_Z,       KC_X,       KC_C,       KC_V,       KC_B,       TD_CLS,         GAME,       KC_N,       KC_M,       KC_COMM,    KC_DOT,     KC_SLSH,    KC_DEL,
 //└───────────┴───────────┴───────────┴─────┬─────┴─────┬─────┴─────┬─────┴────┬──────┘   └─────┬─────┴─────┬─────┴─────┬─────┴─────┬─────┴───────────┴───────────┴───────────┘
-                                             LAUNCH_NUM, NAV,        KC_SPC,                     KC_LSFT,    SYM,        COMP_FUNC
+                                             LAUNCH_NUM, NAV,        KC_SPC,                     OS_LSFT,    SYM_ENT,    COMPOSE
 //                                          └───────────┴───────────┴──────────┘                └───────────┴───────────┴───────────┘
 ),
 
@@ -35,86 +33,119 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 //├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┐   ┌───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
    KC_TRNS,    KC_LSFT,    KC_Z,       KC_X,       KC_C,       KC_V,       KC_TRNS,        KC_TRNS,    KC_B,       KC_N,       KC_M,       KC_COMM,    KC_DOT,     KC_TRNS,
 //└───────────┴───────────┴───────────┴─────┬─────┴─────┬─────┴─────┬─────┴────┬──────┘   └─────┬─────┴─────┬─────┴─────┬─────┴─────┬─────┴───────────┴───────────┴───────────┘
-                                             KC_ESC,     KC_SPC,     KC_SPC,                     KC_TRNS,    KC_TRNS,    KC_TRNS
-//                                          └───────────┴───────────┴──────────┘                └───────────┴───────────┴───────────┘
-),
-
-[_NAV] = LAYOUT(
-//┌───────────┬───────────┬───────────┬───────────┬───────────┬───────────┐                           ┌───────────┬───────────┬───────────┬───────────┬───────────┬───────────┐
-   TD_CLS,     KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,                                KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,
-//├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤                           ├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_TRNS,    KC_TAB,     WIN_SWAP,   TAB_LEFT,   TAB_RIGHT,  KC_F11,                                 KC_NO,      KC_HOME,    KC_UP,      KC_END,     KC_BSPC,    KC_TRNS,
-//├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤                           ├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_TRNS,    OS_LGUI,    OS_LALT,    OS_LCTL,    OS_LSFT,    KC_MPLY,                                CW_TOGG,    KC_LEFT,    KC_DOWN,    KC_RGHT,    KC_ENT,     KC_TRNS,
-//├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┐   ┌───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_TRNS,    KC_ESC,     KC_MPRV,    KC_VOLD,    KC_VOLU,    KC_MNXT,    KC_TRNS,        KC_TRNS,    KC_CAPS,    KC_F2,      KC_TRNS,    KC_TRNS,    KC_DEL,     KC_TRNS,
-//└───────────┴───────────┴───────────┴─────┬─────┴─────┬─────┴─────┬─────┴────┬──────┘   └─────┬─────┴─────┬─────┴─────┬─────┴─────┬─────┴───────────┴───────────┴───────────┘
-                                             LAUNCH_NUM, NAV,        KC_TRNS,                    KC_TRNS,    KC_TRNS,    KC_TRNS
+                                             KC_ESC,     KC_I,       KC_SPC,                     KC_TRNS,    KC_TRNS,    KC_TRNS
 //                                          └───────────┴───────────┴──────────┘                └───────────┴───────────┴───────────┘
 ),
 
 [_SYM] = LAYOUT(
 //┌───────────┬───────────┬───────────┬───────────┬───────────┬───────────┐                           ┌───────────┬───────────┬───────────┬───────────┬───────────┬───────────┐
-   TD_CLS,     KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,                                KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,
+   KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,                                KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,
 //├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤                           ├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_TRNS,    KC_EXLM,    KC_AT,      KC_HASH,    KC_DLR,     KC_PERC,                                KC_CIRC,    KC_AMPR,    KC_ASTR,    KC_LPRN,    KC_RPRN,     KC_TRNS,
+   KC_TRNS,    KC_EXLM,    KC_AT,      KC_HASH,    KC_DLR,     KC_PERC,                                KC_CIRC,    KC_AMPR,    KC_ASTR,    KC_LPRN,    KC_RPRN,    KC_TRNS,
 //├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤                           ├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_TAB,     KC_BSLS,    KC_LBRC,    KC_RBRC,    KC_MINS,    KC_EQL,                                 KC_GRV,     OS_RSFT,    OS_RCTL,    OS_RALT,    OS_RGUI,    KC_TRNS,
+   KC_TRNS,    KC_BSLS,    KC_LBRC,    KC_RBRC,    KC_MINS,    KC_EQL,                                 KC_PLUS,    OS_RSFT,    OS_RCTL,    OS_RALT,    OS_RGUI,    KC_DQUO,
 //├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┐   ┌───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_CAPS,    KC_PIPE,    KC_LCBR,    KC_RCBR,    KC_UNDS,    KC_PLUS,    KC_TRNS,        KC_TRNS,    KC_TILD,    KC_F2,      KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,
+   KC_CAPS,    KC_PIPE,    KC_LCBR,    KC_RCBR,    KC_UNDS,    KC_GRV,     KC_TRNS,        QK_BOOT,    KC_TILD,    KC_COLN,    KC_LABK,    KC_RABK,    KC_QUES,    KC_TRNS,
 //└───────────┴───────────┴───────────┴─────┬─────┴─────┬─────┴─────┬─────┴────┬──────┘   └─────┬─────┴─────┬─────┴─────┬─────┴─────┬─────┴───────────┴───────────┴───────────┘
-                                             KC_TRNS,    NUM,        KC_TRNS,                    KC_NO,      SYM,        KC_NO
+                                             KC_TRNS,    NAV,        KC_TRNS,                    KC_TRNS,    KC_TRNS,    KC_TRNS
+//                                          └───────────┴───────────┴──────────┘                └───────────┴───────────┴───────────┘
+),
+
+[_NAV] = LAYOUT(
+//┌───────────┬───────────┬───────────┬───────────┬───────────┬───────────┐                           ┌───────────┬───────────┬───────────┬───────────┬───────────┬───────────┐
+   KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,                                KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,
+//├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤                           ├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
+   KC_TRNS,    KC_NO,      KC_NO,      TAB_LEFT,   TAB_RIGHT,  KC_F11,                                 ZOOM_IN,    KC_HOME,     KC_UP,     KC_END,     KC_WFWD,    KC_TRNS,
+//├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤                           ├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
+   KC_TRNS,    OS_LGUI,    OS_LALT,    OS_LCTL,    OS_LSFT,    KC_MPLY,                                ZOOM_OUT,   KC_LEFT,    KC_DOWN,    KC_RGHT,    KC_WBAK,    KC_TRNS,
+//├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┐   ┌───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
+   KC_TRNS,    KC_MUTE,    KC_MPRV,    KC_VOLD,    KC_VOLU,    KC_MNXT,    KC_TRNS,        QK_BOOT,    KC_NO,      KC_F2,      KC_TRNS,    KC_TRNS,    KC_END,     KC_TRNS,
+//└───────────┴───────────┴───────────┴─────┬─────┴─────┬─────┴─────┬─────┴────┬──────┘   └─────┬─────┴─────┬─────┴─────┬─────┴─────┬─────┴───────────┴───────────┴───────────┘
+                                             LAUNCH_NUM, NAV,        KC_TRNS,                    KC_TRNS,    KC_TRNS,    KC_TRNS
 //                                          └───────────┴───────────┴──────────┘                └───────────┴───────────┴───────────┘
 ),
 
 [_NUM] = LAYOUT(
 //┌───────────┬───────────┬───────────┬───────────┬───────────┬───────────┐                           ┌───────────┬───────────┬───────────┬───────────┬───────────┬───────────┐
-   TD_CLS,     KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,                                KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,
+   KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,                                KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,
 //├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤                           ├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_TRNS,    KC_SLSH,    KC_AT,      MULT,       KC_MINS,    KC_PLUS,                                KC_CIRC,    KC_AMPR,    KC_ASTR,    KC_LPRN,    KC_RPRN,     KC_TRNS,
+   KC_TRNS,    KC_NO,      KC_NO,      KC_SPC,     KC_NO,      KC_NO,                                  KC_NO,      KC_NO,      KC_NO,      KC_LPRN,    KC_RPRN,    KC_TRNS,
 //├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤                           ├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_DOT,     KC_1,       KC_2,       KC_3,       KC_4,       KC_5,                                   KC_6,       KC_7,       KC_8,       KC_9,       KC_0,       KC_TRNS,
+   KC_TRNS,    KC_1,       KC_2,       KC_3,       KC_4,       KC_5,                                   KC_6,       KC_7,       KC_8,       KC_9,       KC_0,       KC_TRNS,
 //├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┐   ┌───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_COMM,    KC_6,       KC_7,       KC_8,       KC_9,       KC_0,       KC_TRNS,        KC_TRNS,    KC_SCLN,    KC_COLN,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,
+   KC_TRNS,    KC_SLSH,    KC_E,       KC_ASTR,    KC_MINS,    KC_PLUS,    KC_TRNS,        QK_BOOT,    KC_CIRC,    KC_COLN,    KC_COMM,    KC_DOT,     KC_SCLN,    KC_TRNS,
 //└───────────┴───────────┴───────────┴─────┬─────┴─────┬─────┴─────┬─────┴────┬──────┘   └─────┬─────┴─────┬─────┴─────┬─────┴─────┬─────┴───────────┴───────────┴───────────┘
-                                             KC_TRNS,    NUM,        KC_TRNS,                    KC_ENT,     SYM,        KC_NO
+                                             KC_TRNS,    NAV,        KC_TRNS,                    KC_TRNS,    KC_TRNS,    KC_TRNS
 //                                          └───────────┴───────────┴──────────┘                └───────────┴───────────┴───────────┘
 ),
 
-[_FUNC] = LAYOUT(
+[_SH_NUM] = LAYOUT( // single-handed numbers
 //┌───────────┬───────────┬───────────┬───────────┬───────────┬───────────┐                           ┌───────────┬───────────┬───────────┬───────────┬───────────┬───────────┐
-   TD_CLS,     KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,                                KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,
+   KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,                                KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,
 //├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤                           ├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_F1,      KC_F2,      TAB_LEFT,   LAUNCH,     TAB_RIGHT,  KC_NO,                                  KC_NO,      KC_HOME,    KC_UP,      KC_END,     KC_NO,      KC_TRNS,
+   KC_TRNS,    KC_SLSH,    KC_DOT,     KC_COMM,    KC_NO,      KC_NO,                                  KC_NO,      KC_NO,      KC_NO,      KC_NO,      KC_NO,      KC_TRNS,
 //├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤                           ├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_TAB,     OS_LGUI,    OS_LALT,    OS_LCTL,    OS_LSFT,    KC_MPLY,                                KC_NO,      KC_LEFT,    KC_DOWN,    KC_RGHT,    KC_TRNS,    KC_TRNS,
+   KC_TRNS,    KC_1,       KC_2,       KC_3,       KC_4,       KC_5,                                   KC_NO,      KC_NO,      KC_NO,      KC_NO,      KC_NO,      KC_TRNS,
 //├───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┐   ┌───────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────┤
-   KC_CAPS,    KC_MUTE,    KC_MPRV,    KC_VOLD,    KC_VOLU,    KC_MNXT,    KC_TRNS,        KC_TRNS,    KC_NO,      KC_F2,      KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,
+   KC_TRNS,    KC_6,       KC_7,       KC_8,       KC_9,       KC_0,       KC_TRNS,        QK_BOOT,    KC_NO,      KC_NO,      KC_NO,      KC_NO,      KC_NO,      KC_TRNS,    
 //└───────────┴───────────┴───────────┴─────┬─────┴─────┬─────┴─────┬─────┴────┬──────┘   └─────┬─────┴─────┬─────┴─────┬─────┴─────┬─────┴───────────┴───────────┴───────────┘
-                                             KC_TRNS,    NUM,        KC_TRNS,                    KC_ENT,     SYM,        KC_NO
+                                             KC_TRNS,    NAV,        KC_TRNS,                    KC_TRNS,    KC_TRNS,    KC_TRNS
 //                                          └───────────┴───────────┴──────────┘                └───────────┴───────────┴───────────┘
 ),
 };
 // clang-format on
 
-layer_state_t layer_state_set_user(layer_state_t state) {
-    static bool if (layer_state_cmp(state, _NAV) && layer_state_cmp(state, _SYM)) {
-        layer_on(_NUM);
-    }
-    else {
-        layer_off(_NUM);
-    }
-    return state;
-}
+tap_dance_action_t tap_dance_actions[] = {
+    [TD_CAD_LOCK_SLEEP] = ACTION_TAP_DANCE_FN(CAD_lock_sleep),
+};
+
+const uint16_t PROGMEM num_layer_combo[] = {NAV, SYM_ENT, COMBO_END};
+const uint16_t PROGMEM win_swap_combo[] = {TAB_LEFT, TAB_RIGHT, COMBO_END};
+
+combo_t key_combos[] = {
+    [NumCombo] = COMBO(num_layer_combo, NUM),
+    [WinSwapCombo] = COMBO(win_swap_combo, WIN_SWAP),
+};
 
 bool process_record_user(uint16_t keycode, keyrecord_t* record) {
+    static bool NAV_is_on = false;
+
     switch (keycode) {
+        // allow the SYM and NAV layers to override each other
+        case NAV:
+            NAV_is_on = record->event.pressed; // track NAV's state for SYM
+            break;
+
+        case SYM_ENT:
+            if (!record->tap.count) {
+                // if NAV is on, turn it off when SYM is turned on, then restore it when SYM is
+                // turned off
+                // if we're NUM-latched, don't interfere with the states
+                if (NAV_is_on) {
+                    record->event.pressed && !NUM_latched ? layer_off(_NAV) : layer_on(_NAV);
+                }
+            }
+            break;
+
+        case WIN_SWAP: // easy Alt-Tab
+            if (record->event.pressed) {
+                register_mods(MOD_LALT);
+                tap_code(KC_TAB);
+            } else {
+                unregister_mods(MOD_LALT);
+            }
+            break;
+
         case LAUNCH_NUM: // make the launch keycode work
-            if (record->tap.count && record->event.pressed) {
-                tap_code16(LAUNCH);
+            if (record->tap.count) {
+                if (record->event.pressed) {
+                    tap_code16(LAUNCH);
+                }
+                return false;
             }
             break;
     }
+    return true;
 }
 
 // bool process_record_user(uint16_t keycode, keyrecord_t* record) {
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/layers.h b/keyboards/keebio/iris_lm/keymaps/drew/layers.h
deleted file mode 100644
index 426a5154..00000000
--- a/keyboards/keebio/iris_lm/keymaps/drew/layers.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#pragma once
-
-enum {
-    _BASE,
-    _GAME,
-    _NAV,
-    _SYM,
-    _NUM,
-    _SH_NUM,
-    _FUNC
-};
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/layers/layers.c b/keyboards/keebio/iris_lm/keymaps/drew/layers/layers.c
new file mode 100644
index 00000000..90b24521
--- /dev/null
+++ b/keyboards/keebio/iris_lm/keymaps/drew/layers/layers.c
@@ -0,0 +1,24 @@
+#include "./layers.h"
+
+bool NUM_latched = false;
+
+layer_state_t layer_state_set_user(layer_state_t state) {
+    // NUM latching
+    if (NUM_latched) {
+        if (IS_LAYER_ON_STATE(state, _SYM) && IS_LAYER_ON_STATE(state, _NAV)) {
+            state |= 1 << _NUM; // turn on NUM
+        } else {
+            // if both NAV and SYM are off, de-latch NUM
+            if (!IS_LAYER_ON_STATE(state, _SYM) && !IS_LAYER_ON_STATE(state, _NAV)) {
+                NUM_latched = false;
+            }
+            // since both layers aren't held, turn off NUM
+            state &= ~(1 << _NUM);
+        }
+    } else if (IS_LAYER_ON_STATE(state, _NUM)) {
+        NUM_latched = true;
+        state |= 1 << _NAV | 1 << _SYM; // turn on NAV and SYM
+    }
+
+    return state;
+}
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/layers/layers.h b/keyboards/keebio/iris_lm/keymaps/drew/layers/layers.h
new file mode 100644
index 00000000..b33499a0
--- /dev/null
+++ b/keyboards/keebio/iris_lm/keymaps/drew/layers/layers.h
@@ -0,0 +1,17 @@
+#pragma once
+
+#include QMK_KEYBOARD_H
+#include <stdbool.h>
+
+enum {
+    _BASE,
+    _GAME,
+    _SYM,
+    _NAV,
+    _NUM,
+    _SH_NUM,
+};
+
+extern bool NUM_latched;
+
+layer_state_t layer_state_set_user(layer_state_t state);
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/rules.mk b/keyboards/keebio/iris_lm/keymaps/drew/rules.mk
index 244bab28..5ed896ad 100644
--- a/keyboards/keebio/iris_lm/keymaps/drew/rules.mk
+++ b/keyboards/keebio/iris_lm/keymaps/drew/rules.mk
@@ -1,6 +1,9 @@
 BOOTLOADER = stm32-dfu
 
 SRC += caps_word/caps_word.c
+SRC += tap_dance/tap_dance.c
+SRC += combos/combos.c
+SRC += layers/layers.c
 # SRC += taphold/taphold_options.c
 # SRC += utils/utils.c
 # SRC += chordal_hold/chordal_options.c
@@ -15,3 +18,4 @@ CAPS_WORD_ENABLE = yes
 
 TAP_DANCE_ENABLE = yes
 # KEY_OVERRIDE_ENABLE = yes
+COMBO_ENABLE = yes
\ No newline at end of file
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/tap_dance/tap_dance.c b/keyboards/keebio/iris_lm/keymaps/drew/tap_dance/tap_dance.c
index e1c27f3d..27db43c4 100644
--- a/keyboards/keebio/iris_lm/keymaps/drew/tap_dance/tap_dance.c
+++ b/keyboards/keebio/iris_lm/keymaps/drew/tap_dance/tap_dance.c
@@ -1,4 +1,3 @@
-#include QMK_KEYBOARD_H
 #include "./tap_dance.h"
 #include "../alias.h"
 
@@ -17,7 +16,3 @@ void CAD_lock_sleep(tap_dance_state_t* state, void*) {
             break;
     }
 }
-
-tap_dance_action_t tap_dance_actions[] = {
-    [TD_CAD_LOCK_SLEEP] = ACTION_TAP_DANCE_FN(CAD_lock_sleep),
-};
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/tap_dance/tap_dance.h b/keyboards/keebio/iris_lm/keymaps/drew/tap_dance/tap_dance.h
index 3321d686..5d648645 100644
--- a/keyboards/keebio/iris_lm/keymaps/drew/tap_dance/tap_dance.h
+++ b/keyboards/keebio/iris_lm/keymaps/drew/tap_dance/tap_dance.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#include QMK_KEYBOARD_H
+
 enum {
     TD_CAD_LOCK_SLEEP,
 };
+
+void CAD_lock_sleep(tap_dance_state_t* state, void*);
\ No newline at end of file
diff --git a/keyboards/keebio/iris_lm/keymaps/drew/utils/utils.h b/keyboards/keebio/iris_lm/keymaps/drew/utils/utils.h
index 1c2112a9..e61a69dd 100644
--- a/keyboards/keebio/iris_lm/keymaps/drew/utils/utils.h
+++ b/keyboards/keebio/iris_lm/keymaps/drew/utils/utils.h
@@ -1,8 +1,8 @@
 #pragma once
 
 #include QMK_KEYBOARD_H
-#include "stdbool.h"
-#include "stdint.h"
+#include <stdbool.h>
+#include <stdint.h>
 
 /// @brief Obliterate a line of text.
 /// @param key_down Whether the key was pressed down.
@@ -51,4 +51,3 @@ bool unshift_register_or_ctrl_fallthrough(
 /// @param record The current `keyrecord_t`.
 /// @return Whether processing of the key should continue.
 bool unshift_register(uint8_t keycode, keyrecord_t* record);
-
diff --git a/keyboards/keebio/nyquist/rev4/keymaps/drew/rules.mk b/keyboards/keebio/nyquist/rev4/keymaps/drew/rules.mk
index 0a8bfe4e..425a8624 100644
--- a/keyboards/keebio/nyquist/rev4/keymaps/drew/rules.mk
+++ b/keyboards/keebio/nyquist/rev4/keymaps/drew/rules.mk
@@ -14,3 +14,4 @@ CAPS_WORD_ENABLE = yes
 TAP_DANCE_ENABLE = yes
 KEY_OVERRIDE_ENABLE = yes
 
+RGBLIGHT_ENABLE = no # turn off RGB lights
\ No newline at end of file