Hi guys,
Thanks very much for all the advice. I took it all on board and he now has a bigger heat mat, so the temperature is up to standard. I also took out all the moss, so it looks a bit simpler now, and blocked off the side that was exposed to the room. Hes now eating really well completely normally, so I have no need to feed him by hand at all, he ambushes any livefood i put in there so theres nothing left the next day! Thanks again!