College physics is all about math. Ask Einstein who was not so good with the math, but had a little help from his wife (and some mathematicians… , he made it! Evidently you have the math tools. What is Biophysics?
Yes, physics, math and chemistry are all very important tools in modern science/engineering. Nature is interdisciplinary and does not follow the subject boundaries we see in basic coursework. Science applications are moving and integrating very rapidly. Approach it from the end you are most comfortable with. Try not to set disciplinary boundaries.
BU has BME. See https://www.bu.edu/admissions/why-bu/academics/majors/pre-medicine/
I too have not heard the best news regarding BU FA. However I also found this on their website: see https://www.bu.edu/admissions/tuition-aid/affordable-bu/
and also https://www.bu.edu/admissions/apply/early-decision/
!Is this a new development?!
Warning, FA is not my expertise, but it is obviously important.