Try feeding in the enclosure, a live small meal. Also if the tub is clear it may be helpful to do a black out. Which is papering or spray painting the outside of the tub black so that he has full seclusion. Obviously no handling at all. Make sure your temp and humidity is spot on. Humidity is going to keep him hydrated which will make or break him at the moment. Seriously though try live and in the tub. All that moving around is freakin him out and most babies don't take to ft right off.
Check out what's new on my website... www.Homegrownscales.com