Hello,

If you have scored 168 and you want to improve this to 200 then you can do few things-

1.Give mocks and analyse them properly. By doing that you will know what are your weaker areas. Work on those areas.

2. Practice previous years question and check what type of questions you had answered wrong repeatedly. You need to understand that you can leave few topics. By doing so you will get to know that in which type of questions you are comfortable and can solve easily.

3. Be confident and don't loose hope if you get low scores in mock. This is a journey not a final result. Be confident in your exam.

Hope it helps. All the best for your exams and preparation.