Yeah, after about a 10 days or so post-feed Maze starts making her rounds of her enclosure. If she doesn't, That's about when I start to think she's in shed. I've been taking her out a lot less often (been pretty busy lately + I'm sure she prefers it lol), but she's never been a biter. Maze takes forever to turn blue, and acts miserable and reclusive around the time her belly turns pink. At least she's pretty obvious when in blue. Sounds like your guy tries to let you know through behavior, even if you can't always tell, which is pretty interesting!