I agree with the others about not rushing either handling or feeding. Your little guy needs some time to get used to his new home and a nervous handler isn't going to help that along. When you do handle him, be sure to support his body weight for him, give him the opportunity to hide his head and wrap around you for support, and don't act nervous or jumpy. I first got a ball python in 1995 and I first got bitten 3 weeks or so ago (stupid feeding error, completely my fault). I was bitten by a 4' adult and while it didn't feel like butterfly kisses, it certainly wasn't any worse than what my kitten does to my hand day in and day out.