diff --git a/Marlin/src/core/utility.cpp b/Marlin/src/core/utility.cpp
index 385a572029..3d7897f95a 100644
--- a/Marlin/src/core/utility.cpp
+++ b/Marlin/src/core/utility.cpp
@@ -35,18 +35,6 @@ void safe_delay(millis_t ms) {
   thermalManager.manage_heater(); // This keeps us safe if too many small safe_delay() calls are made
 }
 
-#if ENABLED(MARLIN_DEV_MODE)
-  void early_safe_delay(millis_t ms) {
-    while (ms > 50) {
-      ms -= 50;
-      delay(50);
-      watchdog_refresh();
-    }
-    delay(ms);
-    watchdog_refresh();
-  }
-#endif
-
 // A delay to provide brittle hosts time to receive bytes
 #if ENABLED(SERIAL_OVERRUN_PROTECTION)
 
diff --git a/Marlin/src/core/utility.h b/Marlin/src/core/utility.h
index 0e1c109be1..d774b007b6 100644
--- a/Marlin/src/core/utility.h
+++ b/Marlin/src/core/utility.h
@@ -26,11 +26,6 @@
 #include "../core/millis_t.h"
 
 void safe_delay(millis_t ms);           // Delay ensuring that temperatures are updated and the watchdog is kept alive.
-#if ENABLED(MARLIN_DEV_MODE)
-  void early_safe_delay(millis_t ms);   // Delay ensuring that the watchdog is kept alive. Can be used before the Temperature ISR starts.
-#else
-  inline void early_safe_delay(millis_t ms) { safe_delay(ms); }
-#endif
 
 #if ENABLED(SERIAL_OVERRUN_PROTECTION)
   void serial_delay(const millis_t ms);
diff --git a/Marlin/src/inc/Conditionals_adv.h b/Marlin/src/inc/Conditionals_adv.h
index 735e6464d9..19ab98fed3 100644
--- a/Marlin/src/inc/Conditionals_adv.h
+++ b/Marlin/src/inc/Conditionals_adv.h
@@ -370,11 +370,6 @@
   #endif
 #endif
 
-// If platform requires early initialization of watchdog to properly boot
-#if ENABLED(USE_WATCHDOG) && defined(ARDUINO_ARCH_SAM)
-  #define EARLY_WATCHDOG 1
-#endif
-
 // Full Touch Screen needs 'tft/xpt2046'
 #if EITHER(TOUCH_SCREEN, HAS_TFT_LVGL_UI)
   #define HAS_TFT_XPT2046 1
diff --git a/Marlin/src/lcd/dogm/marlinui_DOGM.cpp b/Marlin/src/lcd/dogm/marlinui_DOGM.cpp
index 1fdc291642..1a07b7ab75 100644
--- a/Marlin/src/lcd/dogm/marlinui_DOGM.cpp
+++ b/Marlin/src/lcd/dogm/marlinui_DOGM.cpp
@@ -160,14 +160,14 @@ bool MarlinUI::detected() { return true; }
           #endif
           u8g.firstPage();
           do { draw_custom_bootscreen(f); } while (u8g.nextPage());
-          if (frame_time) early_safe_delay(frame_time);
+          if (frame_time) safe_delay(frame_time);
         }
 
       #ifndef CUSTOM_BOOTSCREEN_TIMEOUT
         #define CUSTOM_BOOTSCREEN_TIMEOUT 2500
       #endif
       #if CUSTOM_BOOTSCREEN_TIMEOUT
-        early_safe_delay(CUSTOM_BOOTSCREEN_TIMEOUT);
+        safe_delay(CUSTOM_BOOTSCREEN_TIMEOUT);
       #endif
     }
   #endif // SHOW_CUSTOM_BOOTSCREEN
@@ -226,7 +226,7 @@ bool MarlinUI::detected() { return true; }
       constexpr millis_t frame_time = MARLIN_BOOTSCREEN_FRAME_TIME;
       LOOP_L_N(f, COUNT(marlin_bootscreen_animation)) {
         draw_bootscreen_bmp((uint8_t*)pgm_read_ptr(&marlin_bootscreen_animation[f]));
-        if (frame_time) early_safe_delay(frame_time);
+        if (frame_time) safe_delay(frame_time);
       }
     #endif
   }
@@ -235,7 +235,7 @@ bool MarlinUI::detected() { return true; }
   void MarlinUI::show_marlin_bootscreen() {
     for (uint8_t q = bootscreen_pages; q--;) {
       draw_marlin_bootscreen(q == 0);
-      if (q) early_safe_delay((BOOTSCREEN_TIMEOUT) / bootscreen_pages);
+      if (q) safe_delay((BOOTSCREEN_TIMEOUT) / bootscreen_pages);
     }
   }
 
diff --git a/Marlin/src/module/temperature.cpp b/Marlin/src/module/temperature.cpp
index cc7aa6c8e1..a9628ff74f 100644
--- a/Marlin/src/module/temperature.cpp
+++ b/Marlin/src/module/temperature.cpp
@@ -420,10 +420,6 @@ const char str_t_thermal_runaway[] PROGMEM = STR_T_THERMAL_RUNAWAY,
 
 // private:
 
-#if EARLY_WATCHDOG
-  bool Temperature::inited = false;
-#endif
-
 volatile bool Temperature::raw_temps_ready = false;
 
 #if ENABLED(PID_EXTRUSION_SCALING)
@@ -1205,11 +1201,7 @@ void Temperature::min_temp_error(const heater_id_t heater_id) {
  *  - Update the heated bed PID output value
  */
 void Temperature::manage_heater() {
-
-  #if EARLY_WATCHDOG
-    // If thermal manager is still not running, make sure to at least reset the watchdog!
-    if (!inited) return watchdog_refresh();
-  #endif
+  if (marlin_state == MF_INITIALIZING) return watchdog_refresh(); // If Marlin isn't started, at least reset the watchdog!
 
   #if ENABLED(EMERGENCY_PARSER)
     if (emergency_parser.killed_by_M112) kill(M112_KILL_STR, nullptr, true);
@@ -1994,12 +1986,6 @@ void Temperature::init() {
     TERN_(TEMP_SENSOR_1_IS_MAX6675, max6675_1.begin());
   #endif
 
-  #if EARLY_WATCHDOG
-    // Flag that the thermalManager should be running
-    if (inited) return;
-    inited = true;
-  #endif
-
   #if MB(RUMBA)
     // Disable RUMBA JTAG in case the thermocouple extension is plugged on top of JTAG connector
     #define _AD(N) (TEMP_SENSOR_##N##_IS_AD595 || TEMP_SENSOR_##N##_IS_AD8495)
@@ -2192,7 +2178,7 @@ void Temperature::init() {
   #endif
 
   // Wait for temperature measurement to settle
-  delay(250);
+  //delay(250);
 
   #if HAS_HOTEND
 
diff --git a/Marlin/src/module/temperature.h b/Marlin/src/module/temperature.h
index 702a3ea04d..12ed4aa950 100644
--- a/Marlin/src/module/temperature.h
+++ b/Marlin/src/module/temperature.h
@@ -419,10 +419,6 @@ class Temperature {
 
   private:
 
-    #if ENABLED(EARLY_WATCHDOG)
-      static bool inited;   // If temperature controller is running
-    #endif
-
     static volatile bool raw_temps_ready;
 
     #if ENABLED(WATCH_HOTENDS)