Handling

He probably just needs time to adjust. Let him get used to his surroundings before you really try handling him. Relax when you do.

Keep in mind that as babies, they will be more defensive and skiddish. Even for a docile breed. Everything is new in their world when they go to a new home and you are a large, intimidating, mysterious creature. So to an immature animal, defensive will be the way to go. Time and consistency will create the familiarity that eventually allows you to become best buddies. Learn to respect him but not fear him, and as he starts noticing that you are the food bringer and the deliverer of warm hands, he will grow to welcome your attention.

I'm glad to see you got to take him out. Keep the traffic in his room to a low and your movements slow and seldom when you have him. As he grows into his strong adult body he will feel more confident in his toughness and will become a smooth, slithery, elongated teddy bear.

Best of luck to you in the days to come!

(p.s. I can also attest to the opinion about the occasional nips; they aren't too horrible, and he will learn quick that they won't scare you off or cause you to hurt him)