First of all, classmate, which district are you from? The standards in each district are different. Besides, you are a science student. Shanghai's science scores are generally low over the years. It should be said that a score of 399 is still promising. The second half is more important. If you can stabilize and improve your grades in the second half of the year, you will feel more at ease in the college entrance examination. But it depends on where you want to take the second exam. If Shanghai and other places don't matter, then you can be very calm. If you want to get into Shanghai, you have to work hard. Because 399 is not competitive in two schools, you should prepare to go to the Institute of Electrical Engineering. I believe you don't want to go to a private university. Therefore, it is very important to improve your math scores before entering the second school.

I'll give you some advice. Science mathematics needs talent, so if you are not good at mathematics, you should grasp the foundation, do some fill-in-the-blank questions and multiple-choice questions, and ensure that the top 56+20 can reach 48+ 15, and the big questions behind can be answered correctly by 75%, so you can get considerable scores. There is another lesson. We should try our best to score above 105, so as to make Chinese and English equal.

Good luck.