Lachlan is a bit older than your bub and he isn't rolling either. At one stage he was rolling front to back quite regularly ( but I think that is because he hated tummy time so much), but he has even stopped doing that. I am getting a bit worried about it too. Although today he rolled onto his side for the first time so maybe he is getting there. Its hard though when you hear of kids younger who have started rlling and yours hasn't. I keep telling myself he will do it in his own time, we dont call him lazy lachy for no reason!