I have 2 1 year old silkies house bound because they can't use their legs. the one eats on her own in a seat I made for her. but the other has quit eating on his own. I am worried he is not eating enough. does anyone know what the normal amount would be in a day. if I hold him and put the dish under his beak, he will eat. he is very thin. I have been trying everything I can think of to add more protein but nothing is appealing to him. they are both on a vitamin regime and silver.