External wakeup from deep sleep on XIAO ESP32C3

Products & Technology XIAO
29

I am beginning to lose hope…quickly coming to the conclusion that it just isn’t possible. I wired it up per my diagram and included the following code which is called after 60 seconds of inactivity:

//Routine to put the MCU into deep sleep
void enterDeepSleep() {
  
  // Configure RTC wake-up source, D0 GPIO2 is the dedicated wakeup pin
  esp_deep_sleep_enable_gpio_wakeup(BIT(D0), ESP_GPIO_WAKEUP_GPIO_HIGH);  //also have tried LOW
  
  Serial.println("Going to sleep now... Press any key to wake up!");
  Serial.flush();
  delay(100);
  esp_deep_sleep_start();
}

…and no luck. It goes to sleep but never wakes up. Maybe I will have to settle for an additional button dedicated to waking the unit up…but with all those other buttons it seems superfluous.