how do i know if he is about to brumate? since he has been lethargic for several months, and i move him from his hide to basking spot, i feel like he might be sleepy and getting ready to brumate, but im not sure since he doesnt move on his own, i dont want to drag him out if he is brumating but also leave him in the shade, cold if he is not...hes about 1.5 years old so this would be the first time. weight stable but hes very sleepy, as soon as i take him out he falls asleep on me.