Of course, theories such as physics and relativity should be memorized. You can circle some keywords yourself, strengthen memory, momentum conservation and other computational aspects. In addition to memorizing formulas, we should also remember the deformation of formulas, read more questions, have time to do problem-solving ideas, and have no time to look at answers.
Chemistry, to remember more, it is best to find a time to sort out, the structure, properties, characteristics of those substances, as well as some reactions and phenomena of substances, detection methods, and related knowledge points, it is best to make a list to remember and review, which will be useful in the future.
Biology, remember the steps and methods in practice, and estimate filariasis and meiosis as the key points. Those images and phenomena in each period can be sorted into a list for comparative memory. When reading a book, you should circle the keywords, and when there are books and exercises, you should understand the relevant calculations.
It's best to do the list yourself, don't rely on reference books, so the memory will be more profound.