🙋♀️🙋♀️🙋♀️ mine, always. Honestly, I never thought of it as something concerning until I just read this lol
My baby has been a side sleeper since he was a few weeks old. It made me really nervous at first but he just kept on going back to his side when I would roll him onto his back. When he has had his hand or arm up in his face, I usually just move his arm and he keeps it down. Usually he has it up when he is first falling asleep so I can catch it early on and don't have to keep checking on him.
Every night!
My son sleeps on his side and has bene doing so since being able to roll onto his belly from his back at around 4 months. It makes me nervous every night to this day but me and my husband came to realize babies are very smart and if they aren't comfortable or able or breath, they would simply shift a bit in position or wiggle around a bit until they find a good position that is comfy and safe.