Hello I have just moved my almost 5 month old ( he will be 5 months in 3 days) from the bedside bassinet to his cot in his own room. This is his 3rd night in the cot. He had started to roll back to tummy and was at the edges of the bassinet so decided to transition to the cot. We put him to sleep on his back which he stayed like this or on his side the first two nights. Tonight I woke and noticed he was lying on his tummy with his head turned to the side. I could see he was breathing but couldn’t relax so I tried to move him to his back which he kept rolling back to his tummy before waking up. He has been on his back for the first 5 hours of sleep and between 12-2 had moved to his stomach when I checked him on the monitor. My concern (from googling) is the risk of breathing in / out his own air and the increased carbon dioxide and his neck being weak. He does tummy time well and since mastering his roll he does this non stop. He doesn’t seem to be able to go tummy to back as easily yet and has only done that a few times. He sleeps in a sack with arms out. His hands are covered in the bonds fold down mittens for the Melbourne cold. Should I leave his hands free? Just seeking some advice on him moving to his stomach on his own accord and if I should continue walking him when I see him like this. Thanks so much