Study with the best teacher you can have and practice practice practice. The teacher or someone else can assess you and perhaps come up with a program to get you up to speed for auditions- if needed.
I would say stop all competitions and possibly stop some of your school commitments to free up time.
Apply to a range of options, including the college side of Bard, Oberlin, Lawrence and Ithaca etc. where you might start in the college but later transition to the conservatory (however if you want to do music in a BA the main opportunities may go to the BM students). You can also apply directly to conservatories for a BM and see how you do with prescreen. And perhaps throw in some colleges with decent non-BM music programs (like Vassar for instance).
You’ll end up doing fine. You sound talented and naturally musical. For awhile, try not to think of music competitively, which is stressful (I know you handle stress well) and just work hard at your own music.