Develop concepts: Make sure you have studied NCERT really well. Solve all the questions from exemplar.
Speed & accuracy: To improve your speed & accuracy, practice a lot. Go through the goal wise & chapter wise tests & at-least finish 70% of each goal for a score of 180 in JEE Main
Analyze yourself: Use the instant reports that Toppr gives you to see your strengths & weakness. Work on your weakness
Revise chemistry regularly: Its very easy to forget things you have studied in chemistry. It needs regular revision. Give atleast a day in a month to revise everything you have studied. Give special attention to exceptions.
Test Series: To know where you stand, attempt All India test series. It also builds exam like environment which help you come out of exam fever or avoid silly mistakes because of tension