Have deep pockets if you intend to pursue this. Nothing about trap shooting is cheap. I used to give shells to a couple of young shooters when I was competing.
Regrettably, most of the “coaches” young kids get are next to useless. If you can afford it, have him attend a clinic by one of the really good competitors. I still have my notes from my first clinic with Frank Hoppe....yes related to the originator of Hoppe’s No 9. He has been shooting 100’s on the ultimate trap field for a while now.
Gun fit is critical for shooting good scores and to reduce felt recoil. Is you are not too far from Gaylord MI, I can help with setting up the gun for your boy. PM me.