My almost 7 year old male cat has been sick for about three weeks. I took him to the vet and he had a fever and was put on antibiotics for week. These didn't appear to work and he stopped eating and drinking. I took him to the vet again and his fever was gone and all of his blood work was normal so he was put on a steroid to make his appetite return. This didn't work and he continued to get worse. I took him to the vet once more and he was given worm medicine and large doses of medicine to kill parasites. He's been on these pills for a few days and still hasn't shown signs of improvement. I've been forcing water and turkey babyfood down his throat with an eyedropper to keep him alive but I don't know what to do! He still won't eat or drink, will hardly move, and when he does move he staggers like he has no sense of balance. He also occasionally makes a wheezing noise. The vet and I are at a loss and I might have to have him put down tomorrow but I really do not want to do that! Has anyone else experienced something like this/have any advice for me?? Any help would be greatly appreciated--my cat's life might depend on it.