If you have complete your syllabus then start revising the whole syllabus as it plays a important role if you want to crack your exam.
For revision you can refer your notes, flashcards if you have prepare them. Do revise all the formulas.
Focus on the subjects and topics which carries more weightage in the exam. You can solve MCQs related to important chapters so, that you have enough practice and your important chapters are covered .

You can go through previous year papers to understand the exam pattern and level of questions. So, you can prepare accordingly. You should solve complete mock test series to know your strength and weakness and you can work upon them.

All the Best!!