Hello everyone, just looking v for advice and your stories. My baby is 7,5 months and doesn't sit up, crawl or roll over. He can roll half way but doesn't seem interested in rolling over - he is really cheeky and when I want to help he laughs and push him self back so he won't roll-same with sitting ... but I'm worried about his development. He is extremely happy content baby he is just not interest in moving around. He just likes to lie down on his back playing with toys on his baby playmat. He doesn't like being on his front or sitting. We spend half days on the playmat and I'm trying to put him on tummy as often as I can. Should I go see GP? Should I wait ?