1 year old will not attempt to get up from lie down position
So, this 1 year old DCG came to me in June @8 months not able to sit up or swallow anything but purée. I have worked hard with her, she now sits, crawls, cruises, self feeds small bits of food, holds own cup etc. But, I cannot get this child to roll over & sit up to crawl from lie down position. She is heavy, I try whenever I can to save my back so, I prefer for them to get themselves up after a bum change (I change them on a pad on the floor). I've tried incentives, at all times of the day...a toy, some food, her cup. Nope she just lies there & cries until eventually I pick her up to sitting position. Same thing at naptime, I never find her sitting up in the playpen, she just lays on her back and stares at the ceiling. She's also really difficult to carry...dead weight is the only way to describe it; I've never seen anything like that before. Any advice?