Cabbage Dad is correct. It's not too late, but you need to be contacting them. Don't wait for them to notice you. It really doesn't work that way (well - most of the time).
My son's experience was a little different. We couldn't afford to go the showcase route so he played D2 JuCo for two years. During his sophomore year (JuCo) he had a fantastic year batting .366 and ranked 2nd nationally among D2 JuCo players in number of doubles hit. Towards the end of the season he had interest from several D3's and a couple of D2's. Committed to a D2 this past May and leaves for the D2 university this coming week.