it sort of depends.
my adults shed every couple months, sometimes twice a month. adults tend to shed in sections, instead of whole body sheds, so it can be hard to tell.
I think my guys go through a full body every few months, and then shed a foot or tail in between.
its not a big deal if you don't see them shed much now, since they are adults.
however, your guy can continue to grow until hes at least 2 years old.