Junior year, you need to start making progress. An inexpensive camp that can give you some measurables is a good place to start. Based on those numbers, you can have an idea of what pond you need to be fishing in. P5, D1, Mid- Major, D2, D3, D3 HA, JuCo, NAIA. Get advice from some folks here. As most will say, you would probably already know if you had a P5/D1 kid. The rest of us are/were fishing in a different pond.
Even without a personal relationship, I would contact the travel coaches to see where they see your son at the college level.
1) Find an advocate for your son, high school coach, travel coach, hitting or pitching coach. Your kid can and should do this.
2) Get the advocate to contact the schools that make sense to contact and junior wants to play at. Make a big list. Without an advocate, virtually all contacts are just slightly above junk mail to the RC's.
Past this, it's junior's turn to step up
3) Junior follows up with the schools with video, HS schedules, travel schedules, ... follow up emails on specific games or performances. Ask about specific roster needs at XYZ state or any other items to know this is not a shotgun blast email.
4) Showball or Headfirst are great camps. Lot's of coaches. Can really generate interest if he's got something to show. Better if an advocate can have the coaches looking for him. Best if the coach at your dream school is there and he is looking for junior. Unfortunately, the coach in your neck of the woods probably won't be there.
5) PBR or PG have big databases but no coaches. I give this a maybe. It can be expensive. A huge measurable will stick out. Everybody else is just everybody else. The Georgia PBR guy will blow some kids up on twitter. Your mileage will vary.
6) Go to a camp or visit that you get a personal invite to, not the ones with unsubscribe as an option.
7) Get bigger faster stronger and better at baseball.
For you, Pray, Patience, Bourbon, rinse, lather and repeat.
Highly over simplified. Good luck.