Tummy crib sleeper- can he bang his head while rolling?

FirstTimeMom💁🏻🤰🏻🤱🏻

Finally accepting that my 6 month old sleep abetter on his stomach or side and not going in to flip him anymore...... but I am sooo worried that when he rolls around in the middle of the night or at bedtime while he’s settling himself he is going to roll and hit his head or legs on the sides 🙇🏽‍♀️

Today he turned his body almost all the way 90 degrees and was on the width of the crib !

Usually he’s trying to roll into tummy but gets stuck on the back board so I see him attempting the roll multiple times on the monitor and then up volume to make sure I don’t hear a thud or other noise and extra crying 😓

Anyone else paranoid about crib safety ?