I wish I had some words of wisdom to help....

...all I can tell you is when I got zeta he slept with me from day one never had a problem with him.... zeta's never even seen a crate....as a matter of fact I loved that I could just look over and see how he was doing late at night without getting out of bed .He still sleeps with me and he is 5 months old, he occiasionally falls asleep on the floor, and I will call him up to to the bed. as for the biting.... when zeta was teeny I would try to pet him and he would think I was playing....I could never really touch him without him trying to bite me.

every puppy bites when thier small and will grow out of it
I guess I just got lucky....