I need help for studying 😧🙏🙏

So basically i am in 11th grade and my final exams are coming near , and since 10th grade i have started having panic attacks to the point where i couldn't breathe and i am startinb to have them again because of the final exams , so can any 12th graders advice me on how to study for final examinations???? For context i am in humanities so yeah any help wiuld be appreciated