It's been cold out and now I have both my box and Russian inside. My box is still eating and active, but my Russian is now sleeping and well sleeping. He's not eating hardly anything. He has lamps, heat rock, water and tons of spring mix and Mazori food but stopped. He still loves to soak and poops tiny poops now. Is this simply hibernation? I'm concerned because he ate nonstop for a month and now he's suddenly hunkering down. It's just all of a sudden.