Im quite worried about this little kitten. The mother had five kittens and 1 of them seems so small and failing to attach to the mother. The others are all crawling around and this one seems to barely roll. They are all over this little one and she seems to kind of get walked on and it stays on its back and just opens its mouth. Im worried it will die. What do I do? Why does it seem like it isnt eating and the others are. What can i do to help this kitten stay alive?