My lo is 8 months 2 weeks he can roll both sides, grabs things, scoot on belly and gets what he wants , he doesn't sit independently but from 2 days he is trying is sit but falls down I this he doesn't have enough strength and his head lags he can hold it when lifted it is not wobbly but lags back side today he is trying to jump from bed and suddenly he he was falling down we can't caught him but his head was swinging I was really scared n when making to sleep we should support it and when he bends back it goes back he arches his back I m really worried about his head lag and my pediatrician is brushing me off..he is trying to stand but he doesn't have strength to may b because of his tone when made to sit he falls back but he tries to sit with his hands support can some one pls help me and we don't have EI