Now that we know the basic concepts, we can't do problems, that is, we can't use knowledge, that is to say, we are not clear enough about the knowledge points. My suggestion is:

(1) Continue to familiarize yourself with the knowledge points in the only time, and there are still 30 days left. Spend more time on math, make a concrete plan, and see how much one day. You must try your best to remember, understand and draw inferences from others.

(2) do the problem. This is a vulgar but effective method. Of course, doing problems is not blind, but skillful. In view of your situation, since you can get 60 points, that is, half of the scores, I believe you are still capable of completing some of the questions. Then when you do the questions next, focus on the questions that you are not good at. Get a problem, look at the problem first, and start with the problem. Then find out the useful part of the known conditions in the stem. Of course, if you can't do it, you can look at the detailed explanation of the answer (I believe you have such a reference book), see how the answer is made, and how people start, instead of the optical method of doing the problem, learn its thinking method, eat it thoroughly, and then find a similar problem to do by yourself. 30 days is a long time, as long as you work hard and try your best to improve.

I can think of these first. Good luck! ~~