You can study mathematics well, and the mathematical requirements of electrical engineering are still quite high. Calculus, linear algebra, probability theory and mathematical statistics, complex variable function and integral transformation are all very important courses, so you should learn them well. The quality of these subjects directly determines the quality of your professional courses and is also an important subject for postgraduate entrance examination. The more you learn about electricity, the more you will find that you are actually learning mathematics. In fact, electrical engineering is basically irrelevant to physical electricity in our high school, and elementary electricity is basically absent in universities.

I hope you have a good start.