Help me, please. I found a kitten. I need advice.?

Yesterday, my stepmom and i went to the mall and as we were driving back we found a kitten on the side of the road. Its eyes were swollen shut. We took him to the vet and they said he has an upper href='http://peiseinik2.posterous.com/how-do-i-get-my-lazy-girlfriend-back-in-shape'>respiratory infection. Every twelve hours i give him eye medicine and antibiotics. He is doing better. How do I know? He keeps crying whenever i put him down and leave him. What do I do because I feel bad. I also have to go to school, so there is no way of avoiding it. Also when he is in my arms he is completely content. I just need advice. On a lighter note he has two extra toes on each paw. :)