Shedding?

So, Steve's up and about again. He didn't want to eat a few days ago, and he still seems disinterested in food today. Him being up isn't odd, he starts to wake up around 8 or 9 and he really gets going around 11 at night, when he likes to wake me up by making noises as he moves about.
He's been rubbing his face up against things, which makes me wonder if he's starting to shed. He's not showing any RI symptoms, he doesn't seem to have breathing trouble and there's no mucus when he does it. It seems about time for him to shed again and his behavior is a little skittish, although his eyes are still their regular color.

What are your opinions?

Any other signs that he's entering his shed cycle? Pink belly? Dull coloration? How long since his last shed? How big is he?

He's a fairly small boy, maybe a little over 2 feet, and his last shed was about a month and a half ago.

And, upon unwrapping him from his favorite tree branch and looking him over, he is considerably duller, and there is a hint of pink around his neck. He wouldn't let me get a decent look at him until I held him, but he is showing some of the other signs.