Go for it! And encourage your son! Another suggestion would be to find a club near where you live for him to join. Our club in Northeast Tennessee has several Junior Members. We do not charge a membership fee for our junior members. Other clubs may do the same or have a reduced fee. The friendships and mentoring he can experience are invaluable.
One member in our club earned his Junior Hunter Title with his dog, and watching our club members rally around to watch their last Junior test was inspiring. Good luck!