If you really don't switch to your favorite major, it is not recommended to prepare too early. If you are reading books of popular science that you like, you really need to prepare from the next semester of junior year, and at the latest, you can't start school beyond senior year, because postgraduate entrance examination is a long-term project. If you prepare too early, many people can't stand it, so my experience is that you will start preparing for the third semester:

1 The most important thing is the subjects to be tested. After all, the higher the score, the greater the possibility of admission.

You don't need to learn by rote, just know. At that time, we basically didn't ask any professional questions during the interview, but asked you how to make up for what others had learned for four years.

We must work hard on basic subjects, at least there are no subjects that drag our feet.

This is probably