have a litter of mini satin kits 16 days old today. litter of 3, 1 was smaller than other 2 from the begenning but seemed to be doing fine all along. this evening when checking out, the small kit seems to be semi comatose like after you have had way too much for thanksgiving dinner and then went back for 2 more deserts. the other 2 have just eyes open, this one not just yet. The mother feeds them very well. Is this maybe overeating? and should I take him away except for a little while in evenings? or something else? or is this maybe a runt developmental thing that is probably facing a loosing battle? has been right along with the other 2 up until this evening and it will move around a little, just not like the other 2.