In the last few days, about a fortnight, devote time in revision and some more practice of mock tests. This is important because there a wide range of formulae and theorem that you need to remember in the exam to solve QA questions. If you can’t recall a formula correctly you cannot solve the question.
Devote one to two hours daily in thorough revision of all the formulae, theorems, concepts, definition, shortcut trick, etc. you may need in the exam. Attempt a 2-4 full length MAH CET Mock Test to keep the flow going. The time management skill that you may have developed previously will be tested now. Practice how to utilize the 150 minutes optimally.