First it is really necessary to animate it frame by frame, i don't have much time for this. And even if i need to animate it frame by frame it seems complicated to me. I just can't find the way to adjust movements of hand, foot, head,... so their movement would be harmonized

Could anybody give me any tip or advice how to control the each part of the body so the whole thing would look as much as real (not 100% realistic, i know that is hard to do)
Thanks