Hey Tom....
Cats are much like people..they donot like change, it stresses them out.That is why he is not eating.!
They have different personalities as well. Check out their body language for clues as to what they want/need.
IMO...Give the cat time to adjust or get another cat to take it's mind offa his problem.
I have a girl-friend that has a cat that has cancer, and she is stressed over it.
Cat's are great company and need to be happy too
