When any of my toads, AGTF, Grey's or WTF's seem off even a little, they can't seem to resist a big ol' fat butter or wax worm. As for the calcium & multivitamin, I'm old school on that and give it to them on separate days. And I agree, don't move him until he is back up and running full speed, no reason to add stress to the little one. It's also possible that the low temps may have slowed Loki down. Bring the temps up a little and see how he responds to that. Pictures really do help out a lot so if you can get some posted, please do.