I have an outside cat that has been coming to the back door for about a year. This time when he came he is sick. He has runny matter in his eyes, has lost a lot of weight. Is unsteady on his feet. I went to petsmart and got him some pro plan and he will eat a little bit, and some laphappy milk, and he has been drinking that. Is there anything else I can do for him? I have made him a bed in a box with a soft blanket, and he is sleeping right now. I am so totaly upset.