He's still adjusting to his new environment, so sticking your hand in there is only adding more stress on top of it. Leave him alone for a couple of weeks until he settles in a bit, and then you can slowly begin to see if he'll climb on your hand. If he puffs up or runs, then he is not ready and you should leave him alone. It takes a great deal of patience and even then, he may never warm up to you at all. In the mean time, try hand feeding with his favorite feeder, give him natural sun time, and/or set up a free ranging area for him. After a while, he may start to associate your hand with everything good and trust you more.