I don't think you need to worry about your kitten not drinking water. There is a lot of water in the wet food. You could try to leave chicken broth down for your kitten or in a pinch tuna water!
I recently moved into a smaller house with my 3 cats. I had to put them on Fluoxetine (prozac) and this really helped. The drug is really cheap to purchase about $4.00 for 3 months. It really may help your problem. I also never do anything my cat wants when he or she is crying because if...