It takes time if you want to study hard. As a basic subject, mathematics is very advanced. I can only give you one suggestion.
First of all, it takes 1 week for primary school textbooks to be finished. Then finish learning junior high school textbooks in half a month. Spend a week sorting out the framework of high school textbooks, and then study according to high mathematics textbooks. The order is to learn a period of high school mathematics first, and then a period of advanced mathematics. Wait until you have finished learning high school math design and plates, and then learn the rest.
If you are really interested, a year should be no problem. If you are forcing yourself to study, you should be prepared to be bald. Basic mathematics is really tiring.
Another suggestion is to study elementary mathematics and exercise your mathematical thinking. Or experience the charm of mathematical modeling and participate in a mathematical modeling competition, which is also quite interesting.
I hope the above content can help you.