RAK3272s "Sleep" lower power consumption Mode?

When using the “AT” command mode with the RAK3272s Breakout Board, is there an AT command or alternative to “AT+SLEEP” to put the Breakout Board (the STM32WL) into a “low power” or “shutdown” mode between LoRaWan transmissions that allows waking up the RAK3272s via an external event instead of just a timed SLEEP period?

When using AT command mode there is no option to wake up on an external event other than sending another AT command.