How old is the kit? Kits will usually start nibbling on hay and pellets within the first week maybe two weeks. You also have to be cautious with placing a kit with other chins which are older, there could be problems. The other consideration is that kits should not be weaned until 6 to 8 weeks of age, until then, they should be with their mother at ALL times. Chins learn by mimicking their parents, and the less time with mom, the less adept and socialized they will be. I would recommend that you try and get kit and mother together, even if it means buying another cage with wire no larger than 1/2" by 1", sorry, but this is just part of breeding/raising chins.