My little guy can stand and walk a bit by himself. He’s never crawled and absolutely refuses. He can roll around everywhere, he can scale items to get to where he wants. And can walk to things, briefly, but more than 4 steps. Anyways, he can’t get himself up from a lying down position. I think he’s trying to go about it from him sides, but he’s just not there yet. Should I be concerned? He will be 11 months on July 4th