Hi. I adopted a 12 week old feral kitten from a shelter. Kept him in a room for 2 days but every time I get close he hisses. I don't want to try to scrotch him when he hisses because I feel like he doesn't want to be hold or pet. He hasn't ate or drink and I don't want him to get sick. Do I have to scrotch him even thou he hisses and feels uncomfortable?