I picked up two foster kittens from the shelter today. They are supposed to be 5-6 weeks old but are very tiny. Their little cheeks have no meat on them at all. Their eyes look too big for their heads. No one said anything but they appear to be starved. I can't think of why else they would look this way. So I am feeding them my normal canned kitten food for their main meals and leaving EVO out for free choice. Should I be doing anything else to help them? They look awful!