Hello,
Do not worry, firstly make a plan and schedule and than act accordingly. Those chapters in which you finding difficulty for those contact to your teacher, they will definitely help you. Try to complete your course before pre board and after pre board solve last 5 years board question paper.
Do not panic, all the best. Hope this will help you.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile