I tried using the AirPods Pro as sleep earbuds. That didn’t work.
It started off well. I put the AirPods in my ears and tried lying down in bed to see how it felt. I’m a side-sleeper. I laid on my left side. Felt good. Right side. Felt good. Used the Dark Noise app to play background noise into the AirPods. Noise cancellation worked well enough; it muffled but did not stop sound in the room.
Then the trouble started.
The AirPods Pro have a safety mechanism to prevent you from pushing them too far into your ear. As I laid in bed on my side, the weight of my head began pushing the AirPods Pro deeper. They started to beep. That woke me up—but not fully awake. Just awake enough to move my head a bit so the beeping stopped.
This seemed to repeat dozens of times until I woke up enough to get the AirPods out of my ear. I couldn’t get back to sleep so I sat up for a bit until I got tired enough and went back to bed.
If you’re a back-sleeper or belly-sleeper, sleeping with the AirPods Pro will probably work well for you.