I have a good friend who was at an even higher level, all region. He attended Berklee and played professionally. He’s now not involved with music at all.
I think your son is doing great, both in music and academically. He shouldn’t ignore academics to the point though that he doesn’t have a foundation for something else. It’s hard to make a living in music, especially in jazz. He should follow his dream, but have something to fall into if it comes to an end.
FWIW, he did say Berklee did a great job of letting the students know the realities of the industry, and giving them marketable skills to both help their music careers, but that would translate out to other jobs.