I'd bump the hot side up about 5 degrees. Hatchlings especially like it a little warmer in my opinion. 91-92 F. Also I'd recommend not disturbing him as much as possible until he is established. Don't go in to the cage for anything but to change the water and leave him alone. Try to feed him in about 5 days after you have raised the heat and left him alone.

They are very shy most of the time at that size and are best left alone until they become stronger eaters.