I have a Cherryhead hatchling whose growth has slowed down significantly since the onset of cold weather. The little thing doesn't seem to eat as much, and I was wondering if it might be because I can't take him outside regularly. Rowan hasn't lost weight and is quite active on those days when I can take him outside. I've read that Cherryheads go through a winter slowdown period. Is slower growth what is meant by this?