Your glider may need some solid undisturbed sleep. If you are carrying him all day long, it is much like some one shaking your bed every 30 minutes ALL NIGHT.
His little world has been turned upside down - taken away from other gliders, moved to a whole new environment, with new smells, sounds etc.
Try leaving him in his cage for most of the day so he can sleep with out being disturbed. Take him out in the bonding pouch in the afternoon to carry him for a few hours and then arrange some play time with him out of the cage in the evenings in either a screen tent or a glider proof (check for holes and hazards) bathroom. That out of cage time will let him learn to explore you. Keep the lights off or very low (just a laptop screen may be enough light) and bring something to entertain your self. Let him just explore and offer treats when he comes near you.
soon the little guy will be coming to you begging for goodies, but that kind of trust take time and patience.