My 5.5 month old randomly decided to take to rolling on his side and that’s how he wants to fall asleep. Which is fine except everytime he dozes off, he starts to roll to his back and then he jerks and rolls back to his side and the cycle continues. Any suggestions on how to help him??? I have a long narrow pillow i put behind back to kinda help keep him propped up just so he can sleep (plz no judgment, i did it for naps so my eyes are always on him) just looking for some tips on how to help him. Thanks!