So if he's in a shed cycle, be sure to keep his humidity up (about 65-75%), and/or add a humid hide- to facilitate the shedding process.
It can be very hard to tell when a pale colored snake is clouding up- the best way I know to be sure is to use a tiny flashlight in a dark room- shine the beam from the side, across his eye- the cloudiness, if it's there, will show up really well. In normal light, it's so hard to tell. I'm good at telling when a snake is in shed (I've had tons of practice) but even I had trouble telling when I had some albino snakes.