What is a strategy for a drop year to crack the JEE Mains?

What is a strategy for a drop year to crack the JEE Mains and score good in the improvement exams? 

You are asking for a whole year strategy.

So, first, know your weakness and strength of each topic(not the subject).

Write down and make a list of all important topic that has well weight. Then mark it alpha for the strong topic, the beta for the average topic and gamma for the weak topic.

Then watch a high powerful motivation video. And let gets started.

For physics, solve HCV and DC Pandey. First complete strong topic because it does not require much time to complete it and also increases confidence. Or if don't have it then only buy HCV without objection. If you have other books solve it but HCV is a must.

For chemistry, do the same first complete all the strong topic then weak topic then moderate topic(only for chemistry). Buy some books like Op tondon all three books or other books which you have. Since you are drop year so take some book don't be a money saver.

For maths, usually, we don't like maths of jee it is tough according to us. So, buy sk goyal book. It has five volumes and complete that book you did not other. I strictly say to you to buy sk goyal.

There are some points which are important like

1. Make a realistic timetable.
2. Follow it strictly.
3. Right method to study each subject.
4. Right books.
5. Some coaching material.