Great comments from seasoned high academic school dads above. I"ll add:
AS an incoming junior year position player with good academics, attending a late summer-early fall Ivy camp is key. If money not an option, go to 2-3 of them. Your son will get tons of reps in front of all that Ivy's coaching staff. If he's liked this really gets the recruiting ball rolling in the junior year. Most Ivy's will have identified their top guys to recruit by late junior year, with a few offers going out, but will continue to recruit through August. There will be multiple other school HC's assisting run the Ivy camp. They are hopeful for players that the Ivy isn't interested in (GTown, Bucknell, HA D3's: Amherst, Middlebury, JH).
As a PO you can go to the Fall junior year HF or ShowBall Camp where tons of schools will get your data and a visual of your skills. For HA D3 send emails & video late junior year and plan to attend a few HF or Showball Camps June-Aug. It will work out.
Right now: get good scores, get stronger, get faster.... Strong consistent bat, speed under 6.9 can get noticed. Quality strength training program with good diet is key area to spend dollars now. Good Luck.
Further questions feel free to PM (son ended at a NESCAC & we missed the beat with Ivy recruiting for position players - he's a happy guy where he landed)