Hey,

I would like to suggest you to divide your time accordingly. By now your syllabus is obviously complete so you need to revise and take mock tests . The method of study should be to start revising from class 11th topics first as because of board exams you have been away from these topics for a large number of days. Start taking a mock test on a daily basis either offline or online. Revisit your copy or notes and see all important formulas and concepts and try solving or revising unsolved questions from your study material which you have already done. You can also solve previous years papers of your respective exams which are easily available on the internet or on bookstores but the internet is preferred at this time of lockdown.

Hope this will help you.