So first time around I was exactly thinking the same thing it's way to risky but as my baby grew he would get his legs stuck and I mean really stuck to the point I was worried he was going to break his ankle or legs so I went and bought some bumpers. When he started to roll he would bang his head super hard on the sides so for multiple reasons I will be using crib bumper pads with the next baby. We used crib bumper pads for our first when he was really moving around well. Likely around 6 months but I can't remember exactly. With our second I chose not to get the pads but got mesh ones. He slept with his head pressed against the crib bars until we moved him to his big boy bed a couple weeks ago. I used crib bumper pads once my first baby was about 6 months and could roll/squirm around in the crib - as a result of all the moving around she'd ditch her pacifiers over the side of the crib, between the bars. We used crib bumper pads for our first when he was really moving around well. Likely around 6 months but I can't remember exactly. With our second I chose not to get the pads but got mesh ones. He slept with his head pressed against the crib bars until we moved him to his big boy bed a couple weeks ago. He didn't have any marks on his head. I found that the mesh ones were a good compromise because my anxious mind started to fret about the suffocation risk so getting the mesh helped balance that with my other worry that he'd get his arm stuck in the bars and break it.
I hope our different experiences help you with your decision.
