Marceline sleeps face down now. Ever since she figured out how to roll over a few months ago she won’t sleep on her back. Even if you put her down on her back she rolls to her stomach and sleeps face down.
Even more interestingly she now sleeps with her knees under her and butt high in the air. I know this isn’t exactly unusual for a baby, but it reminds me of how I slept after my appendix tried to kill him 15+ years ago. I slept face down with my knees under me and butt in the air for weeks. It was the only way I could fall asleep without pain.
So I can relate to it’s comfort when needed, although I’m pretty sure Marceline’s appendix isn’t trying to kill her. But maybe sleeping habbits are changing. I walked in to check on her last night when she was making noise and she was sitting up looking around the room. New things every day.