[bronxbomber92]

Having been in a very familiar situation as the OP (worked as a junior software engineer for a startup during Junior and Senior years of high school) and also sharing the same situation that she has now (interning while in college), my advice after reflecting on my own experiences would be: slow down.

I absolutely loved my work experience during HS and it has helped my professional life in countless ways; but it is important to ask yourself, "what is the rush?". The summer after your senior year is for many the last time you will be able to spend quality, carefree time with the close friends you've had since kindergarten (or elementary or middle school, etc). Enjoy those opportunities while you can! As the OP said, it's much easier to get an internship once you're in college. If you have the right combination of circumstances and skills to get an internship during high school, you certainly will the following year, too :).