Have you thought of getting an SAT math tutor? I have to think you have not.
Look. My D was brilliant at everything – but not math. Took the SAT [no prep] as a tween for a gifted program application. The math score was 100 points lower than the verbal. Took it again a year later and similar results [each up about 50 points].
PSAT was better [99th percentile reading & writing/96th percentile math]. She had a fantastic math teacher in middle school.
Practice scores on the SAT were 800 reading & writing and 680 math. Got her a tutor who concentrated on the PROCESS for dealing with the math questions. Final scores: 800 Reading 800 Writing 770 Math. I’m not saying that this works for everyone, but it did for her.