Hello! So this is my first tortoise and I speculate he was wild caught do to certain things. But since the beginning of November he has been sleeping a lot and all burrowed deep into the substrate. During the summer I would have him outdoors during the day and indoors during the night but I live in Indiana so he is fully indoors now. The room I have him in is a finished attic so it has heat but it is chiller then the rest of the house if I don't run a heater. I've been running a heater to keep his room warm but I leave it off at night. He almost seems annoyed when I turn the heat on and disturb his slumber. I'm starting to wonder if I should just let him naturally hibernate. Without the heater the room will be a controlled temperature but much cooler. How cold does it need to be for a tortoise to hibernate? In the wintertime that room will probably be around 50 degrees. Right now without the heater it's around 60-65. I'm just trying to figure out if I should commit to the heater and just run it on a timer so it stays on enough during the day/night, or keep the room cold so he can sleep.