You sure are trying your best!!!! I think if Timmy is doing good on the canned food split for two meal, keep him on that. BUT, feed him a GOOD quality food. My cats seem to like Nutro. I do not leave out any food after they finish eating, the bowls are washed and put away. There is clean water for them to drink. If you would like a good book for a reference, see if you can find The New Natural Cat by Anitra Frazier. I bought my copy in 1991, and use it all the time!!! Good luck with Timmy!!!! Sandra