Thank you all so much for your words of concern for my Leo. After much soul searching, my daughter has convinced me to give him the appetite pill, along with the antibiodic. Leo does seem to be improving and the appetite pill seems to be working. He ate pretty good yesterday and he is starting to follow me around like he use to. I can tell he is still not 100% yet, but I do think he is on his way back. I love this cat so much.