@DramaLove2020 it is my understanding that, even at schools where academics are a larger part of the admissions picture, they are considered in relationship to the audition. How this is administered will vary from school to school, but I am not sure that there are auditioned programs that will weigh the academics higher than the audition itself.
That being said, strong academics cannot hurt, and may help. You say you have strong MT skills, just that singing is your weakest. Weaker singing (with potential for growth) in context with strong dance/acting will work for you at many schools. I know where I teach some come in as stronger singers, some as stronger dancers, for us that is all part of balancing out an incoming class.
Creating a balanced list of schools is important for everyone.
Since you are a strong academic student, you may want to add a few schools that do not require an audition where you can still get solid training. At some of the schools your stats may qualify you for academic scholarships. Examples include:
Muhlenberg (optional audition for scholarships and to demonstrate interest)
Northwestern (optional MT supplement… very tough academic admit)
Skidmore (opportunity for strong dance, theater, supplement with voice)
University of Mary Washington (not sure about scholarship auditions)
Christopher Newport (optional audition for scholarships)
Schools that have a higher academic bar, require an audition, and look at academics as some part of the equation include:
American
Elon
JMU
Michigan
NYU
I am sure there are many I am missing, and hopefully others will chime in!