It seems that the math problems in the public exam are very difficult, but in fact, its answering ideas are very different from those in junior high school and senior high school, so you don't have to be afraid to take math problems, they are not that difficult. Moreover, the line test is to examine your comprehensive ability, and no matter how good math is, you may not be able to get in.
The review of the math part should be aimed at you. In other words, do more real questions over the years and provinces. This is the most effective way to improve your grades. For real problems, it is enough to master the corresponding problem-solving methods. There is no need to remember so many formulas. The key is to do more questions and summarize more.
If you feel that your foundation is not good, you can sign up for the basic examination training class. In fact, it's the same for all of you, and the things you talk about are similar, but it sounds really useful. It can tell you some learning methods, help you collect and sort out many questions, help you master answering skills and develop study habits.
To sum up, just sign up for a basic class and listen carefully. After that, I will do a lot of real questions and sum up my own ideas. About a month before the exam, I will use the mock exam, seize the time to do the questions, and focus on training the speed of answering questions.
Prepare for good luck and have confidence in yourself.