I'm probably over-worried and seeing other babies J's age (10mths) does not help... J never liked being on his tummy so I gave up trying to put him on his front (maybe I should have tried earlier?). He's just started sitting up on his own but still hates being on his tummy even though he has been seeing a physio for a few weeks. He may go straight to walking when he's ready but his legs still bend up underneath when I hold him upright with his feet on the floor.
I just want some reassurance that yes, J maybe behind on this but he's not the only one. He's fine on all the other development things like language, fine motor abilities etc. Am I being too pushy?