Mathematical physics is not good, and mathematics is not good. Mathematics requires talent or intelligence. If you don't have talent, you can only improve slightly, and you can't improve 100 points at once.
28 days, you plan it yourself, of course, mainly math and physics. Go through your easy-to-mistake questions and knowledge points from beginning to end to make sure you get them right. Only do the key questions, and never fall into the sea of questions.
I have been serious, I have been working hard, and I am worthy of myself. No results are required.