Hii chandana.

Well, fist things always first, you need to set yourself a perfectly laid schedule(time table) and must try to follow it up, as much as possible if not strictly. Having a properly planned and organised schedule would surely prove to be an integral step towards your success, accounting for almost half of your job done and making things easier for you.

Practice becomes a key aspect in your exam preparation and throughout the period you must devote yourself entirely for the purpose without any distractions. Being thorough with the prescribed NCERT text books forms the primary objective, be it for any subject. So before referring any other guides and reference material, reading NCERT books is of at most importance, thus make a habit and get acquainted with reading NCERT books. The more you practice effectively, the better results you reap.

Solving the previous year question papers of board and jee papers will surely help you up your confidence levels and strengthen your command over the subject. So try giving yourself as many of those mocks as possible, before you attempt the final exam, which will eventually help you in developing the much needed exam writing skills and prepare you mentally for the board exam and also for jee paper.

All the Best!!