Congrats on his commitment! A kid I coached Austin Triplett played there the last 2 years. That's a lot of pitches for that long of a lay off. I bet he was whooped. I was 88-90 in HS, and gained a couple as I grew into my body and by 21 I was 89-92. I was always too worried about my velo. My recommendation is to let the velo come with age and size and work on pitchability. If I had to go back I'd learn a cutter or splitter.