Here's what you need to know. I didn't play varsity as a sophomore either. I'm a late bloomer that finally reached a nice level my senior year. My junior year stats were something like 4-3 with a 3.00 ERA and my velocity 83-85. (I'm a righty.) Did I get looks after this year? Hell no! But remember that thing called next year? "The most important pitch in baseball is the next pitch." So what did I do? I worked my ass off. And I mean really worked it off. I played football and did baseball, I took the winter off and did baseball, then I played soccer in the spring and did baseball. Live, eat, and breathe baseball. My senior year was much, much different. I added a slider to my repertoire and refined my 2SM and my splitter. What happened was my velo jumped to 85-88, and I went 12-1 with a 0.97 ERA in 73 innings. I got every all-state, all-conference, etc., award you could think of, including pitcher of the year in Iowa.
What am I trying to tell you? Hard work is rewarded! God has a soft spot for hard workers. If you want it, go freakin get it! It's all up to you my friend. Surround yourself with good people, stick to your program, listen to your coaches, and most of all, do work! It's not going to happen without hard work. It's just not.
P.S. You have an advantage on me, too. You said your 6'3. I'm barely 6'1 and usually 6'0 on most scales. Now get to it!