Baby moving a lot during his sleep

Same. My son started to flip at 2.5 months and since then he has been moving ard in his slp. He wld always break out of the swaddle so we decided to stop swaddling him aft tt. And he seems most comfortable with his butt up cz he can slp long hours in tt position. I was afraid at first that he wld suffocate because his face seems to look like it's face down but after observing him in the first few days, he does know how to adjust himself. I just made sure there's no pillow or anything else in the cot. He has been sleeping side ways and on his tummy till now at 2years old 😅

My 6 months old did same too like from laying flat, side ways, tummy time sleep. I let it be because each time I adjust she will do the same. I change from baby cot to playpen. To me it is safer and the net helps prevent her feet from getting in between the cot gap.