It's driving me bonkers! The kid will happily lay on his sides rolling from his back. And I know very well that he can roll from tummy to back because he has done it in the past. He just chooses not to. Even if he begins to roll to one side, he will correct himself back to Center every time.
He's gonna be 5 months in 3 days. It's really got me worried. He loves to stand and kick his legs and is grabbing his feet, but this rolling thing is starting to get my stomach all tied up in knots. In one more month he will be expected to have all his rolling accomplished and to be sitting up and I just can't imagine how he will manage all that work.