This is probably not going to help you much. Some people are just really good test takers, and don’t need the prep. if I were you, I’d just study the hell out of your blue book (practice sections!) and then take a full length practice test to see where you stand. Some people just need extra practice.
That being said, I went from a 2140 with essentially no prep, to a 2270 (2300 superscore) after doing a trillion and a half math practice sections.