My boy is about the same age as yours. Sometime he will shed 3 times in a row, other times he will go a month or so without shedding.
If he looks like he’s about to shed again, make sure you’re keeping the humidity nice and swell and maybe even put him in the shower. Put the shower head facing the wall and hold him in the shower where the droplets will hit him. My cham can go from being pissed off and hating the world to the happiest animal I have ever seen just by doing this.