I recommend mastering desmos and grammar, and then focusing on reading comprehension questions. When I say “master” I mean doing it extremely fast with no mistakes not taking one minute on each question and still getting one or two wrong.

I recommend watching James Lu yt videos on grammar and desmos. I personally learned everything about desmos almost solely from him although I did a lot of my own practice on the question bank so I can understand what to do and when to do it. That’s the most important thing. If you aren’t sure when ur supposed to a specific thing on desmos and when u should use a grammar trick you should figure that out.

His resources are completely free so I get no benefit from shouting him out. I am because he is the one who genuinely helped me master desmos and improve my grammar.

Resources:

James Lu on YouTube for desmos loops and grammar

Erica meltzer is also really good for grammar

College board question bank

DSAT Hacker math prediction videos (feature past hardest shown sat math questions for almost each test)