My son is 4 months old! He is phenomenal at rolling from his back to tummy but when it comes to rolling back over onto his back he freaks out crying and screaming! I know he can roll from his tummy to back because I've seen him do it before! My question is should I just let him cry for a minute or so so he can try to roll back or just go flip him back over to his back?? I'm just torn cause I hate seeing him get so frustrated but I know he also needs to learn!!!