Hi my baby is 9 months and he's still very wobbly at sitting up, if he goes to pick up a toy or anything he falls over. He's not pulling to stand and has no notion of doing it anytime soon. He can stand when you hold both his hands but he can't stand holding onto something. He still can't pick up finger food from a plate, he's not crawling and is showing no signs of crawling, he can roll but he doesn't do it very often. He's babbling but still haven't heard any mama, dada. He's not clapping or waving and is showing no signs of doing it either. He has no teeth yet either. It just seems like all the babies at our group is doing all these things and I'm worried. Am I worrying over nothing...