I have 2 kittens who aren't orphans per say as they have a mom however she has 6 kittens total and these two were getting pushed out of the way and mom only has 2 nipples that are producing. They are about 2-3 weeks old and I have had them since Wednesday of last week. The mom was left behind in a neighborhood with them when they were 1 week old when her owner moved, a kind neighbor brought them into the vet clinic I work at. They at first were on a syringe as the girl who had them for a few days before that (I was having some emotional issues with my own cat so was under too much stress to take them) was doing a syringe. But they were getting dehydrated that way and requiring sub q fluids. She doesn't have as much experience raising bottle babies as I do. I moved them to a bottle and I put them with their mom during the day but supplement feed them (they don't eat as much) and take them home at night and wake up every 2-3 hours to feed. They have been doing great, gaining weight every day, but still smaller than the other kittens, the boy I have is catching up to the other kittens, the little girl/runt is still about 1/2 their size. I had them over the weekend, they were with mom for 1/2 a day on saturday and then I put them with mom yesterday during the day. Last night the little girl will hardly eat from the bottle. She will take a few sucks and then stop eating. They both have really bloated bellies, I'm thinking worms maybe? But I don't know if she is wanting mom and so she's not eating from the bottle or if there is something wrong with her. My dad is a semi-retired vet so I am having him check them once he is available late this morning, but was just wondering if putting them with mom is confusing her or what? She has been doing fine otherwise. She does seem a little more wobbly than the other kittens, I'm wondering if she's got something neurological or cerebral hypoplasia or something. But any suggestions as to why she would stop eating so well when she was doing fine? She did gain a little weight today. She was 6.4oz yesterday and is 6.5 &5/8 today. She went from 5 & 5/8 to 6.4 from Sunday to Monday. So she didn't gain much since yesterday. Definitely gonna have her checked out as soon as I can. He was 8oz yesterday and is 9oz today. They both wont' go poop when I stimulate however they are going on their own on the blanket.