Well, chemistry, math, and physics are all related by math. So studying and understanding math should help make the other two clearer. In terms of physics, for high school and below, it should be a simple matter of practicing problems. Find the right formula, plug into the formula. There’s not much thinking involved unless you go up in physics, where there’s a bit too much thinking I’d say. Chemistry is something that is kinda abstract even at an elementary level, but really, until you take the stuff in college, it’s all about memorizing and accepting the concepts and rules in the book without seeing the justification anyway.

Study and hope for the best. With time, you could pass each subject with at least a B, or even A. Worst case would be a C, if you study.

honestly i did not take the sciences subjects. if i am you, the subjects that i might having problem, i’ll look for my tutor or my lecturers. form a group discussion among classmates. sometimes friends make us understand more than our teachers. good luck!