I'd do a vet trip sometime soon. As a cb breeder im concerned that that baby came with a tick. I've never seen ticks on cb babies. You had said you had one side heated by a uth and the other side heated by a red lamp. Put both heating elements on the same side. You need a distinct hot and cold side. You should have at least the uth on a thermostat. They get super hot and with no distinct hot/cold side that could be why he's stressed. The tank or his hides could be far too hot. That's the stuff I saw really hadn't been covered yet. I hope this helps.
Morgan