Is he ok sugar glider sleeping and handling concernes?

I have had Mr. snuggles for about two weeks now I can put my hand in his cage he will climb on me and also my two children and still not to keen with my husband Well i was wondering if he is ok with this how do i know when its safe to let him out and he will come back also he wakes up around 3-4 am in the morning and is up till 2-3in the afternoon lights and all are the way there suppose to be is this normal?