because he doesn't have the strength yet to move his arms & legs independently to actually move. But it's all he wants to do, then gets frustrated cos he keeps doing face plants on the floor & just ends up screaming all the time. i know that's how they learn, but he's not even sitting yet, seems to want to do things in the wrong order!
Anyone else had this? Any tips on what to do to make his life a bit easier at the mo? He doesn't want to sit in his bumbo, or on his playmat or even sit up being propped by cushions.......