Majoring in Musical Theatre?

I’m a sophomore in high school and I plan on majoring in musical theatre. I have been studying singing for 9 years, I took 2 years of acting classes, and I don’t have any dance training other than what I’ve gotten in shows.
My credits include:
•the Blue Morphos Butterfly in The Survival of Ukocono
•Rebecca Fitzwilliam in Murder at Crooked House
•Lily St Regis in Annie (twice)
•Marmee in Little Women (play not musical)
•Silly Girl/Napkin in Beauty and the Beast
•Head of publicity team for Pippin
•Makeup/Hair crew for Arsenic and Old Lace
•Ensemble in R+H Cinderella
•Ensemble in Rent
•Operator in Sorry Wrong Number
•Stephanie in Monotony (student film)
I am in theatre class at school, I am in the women’s choir at school, and I am an inducted member of our schools troupe for the International Thespian Society. I plan on continuing to do shows and classes all throughout high school and to audition to be in the show choir at our school next year. Is there anything you would recommend to help prepare me for this journey? Any comments at all would be greatly appreciated.

I do plan on starting in a dance class soon though and it would include foundational dance skills .