Go through the Bio ncert as fast as you can revising each and every line. Especially note down the points which you think you will forget in the end time so you can go through them.
For physics and chem, first and foremost GO through the NCERT solutions and also go through the illustrations given in the textbook. Try to solve previous years questions as much as you can.
DON’T forget to learn the diagrams given in the NCERT. On the last page of your BIOLOGY NCERT BOOK, a supplementary material will be given.
Go through that as well.
Master all the stability orders in organic chem.
If you have a physics guide with solutions to all questions, try to do the questions which you think are important and then check the solution.
ALL THE BEST !