Do more questions. When solving problems, pay attention to mastering methods. You should have your own ideas, what kind of tips and how to do it, and where to start. Mastering the method will improve quickly, so there should be an overall review for such a long time. You should keep up with the steps and make sure to do more questions. In fact, there are so many problems in math that you can't go anywhere. If you do more problems and solve all kinds of problems, it will be difficult for you to study hard for another three months.