Learning
Don't sweat the HS stuff, it's important to be part of the team...if he really wants to be noticed as a catcher, get on a good summer team as noted by many.
If he can hit, and hit well, he'll get his spots. My son is also a 2016, primarily at 1B. One of the senior captains is also a 1B (as well as #1 pitcher), so my son plays in about 1/2 the games. He's fine with it for this season...he's also on a summer team playing 5 of the bigger NE tournaments this year.
Tell your son to work on his hitting, and take any opportunity (C, OF, DH) as if his hair is on fire. All good!