We found a grey tree frog in the Christmas cactus, pretty sure he was hibernating as he was buried a bit. We didn't want the cats getting to him so we moved him to a 5 gallon tank. Gave him some plants and a stick to climb on and the substrate is coconut fiber. Something I am stuck on is should I get him a heat lamp and how often should I try to feed him, I think he is hibernating again? He seems to just hang out in one corner and not move, I think he is trying to sleep for the winter again. Should I let him sleep and not get a heat lamp? I offered meal worms but he didn't even react... I plan on releasing him once it's no longer cold also, if I am in the northern Illinois area what month should I do that? I just want to make sure the little guy is comfortable.