There is an inconsistency between your stellar GPA and SAT math score, so may I ask, how have you been preparing for the SAT math test? Especially for math, I think practicing with physical copies of tests is far superior to doing it online. This might be helpful: get copies of the practice tests; find a quiet room in the library or school (but not in the comfort of your home or a cafe); set a timer; do the tests without interruption. Our brains do adapt very quickly (even in a few days); you can do it, good luck.