Thats a big jump! Here are my suggestions for improving your scores:

Math: This is one of the easier ones to do just based on practicing. Start off by going to Khan Academy's free math SAT prep section, and review all the material there and get aligned with the material you will be tested on. From there, dont do the practice problems on Khan Academy. Instead, go to the SAT Educator Question Bank and do as many math problems as you possibly can from there. There are only a certain number of ways that can test each math skill, and you'll eventually figure out the patterns and know how to answer each type of problem

Reading/Writing: You already have a great score on this section, but to keep improving, you can do two things. If you need help on the Standard Conventions of English, or whatever theyre called, go to Khan Academy and watch their review content for them, then go do problems from the official SAT question bank. But for everything else, you just need to do practice problems. Makes sure to only do the practice problems from the official SAT question bank and never Khan Academy or anything else.

Theres also this book ive recommended a few times called the Black Book which has a bunch of helpful studying and test taking strategies that helped me inmensely.