Hi aditi ,im ishmeet 17and +2 medical ihave just finished with my pre boards and am going through same problem, but i ll suggest u to make a loose schedule to get back in pace. because we people always make harsh schedules like studying 12-13 hours a day and when we donot follow it we feel very depressed and pissed off. try making a schedule of 6
-7 hours and include the things that u enjoy doing because without happiness one cannot focus and relax everything is going to be good just trust urself.
good luck for ur boards 🙂