Hi ladies - my 3 month old is out of the swaddle and has mastered rolling to his tummy and now loves sleeping there, which I'm ok with. The tricky part is that he is now SCOOTING in his crib, while asleep, and waking himself when he bumps into the crib slats....UGH! I don't want to use a bumper, because they freak me out a bit with the SIDS risk. Any ideas to keep him from scooting so much? Or to help him sleep through it - besides CIO?