You have enough time to prepare for JEE exam. You should make your own time-table according to your comfort. So, that you can easily complete your syllabus on time and you have enough time for revision.

To score good marks in JEE exam make sure your basics are clear. Build your concepts strong. So, that you can easily do tricky questions.

Before starting your preparation you should be aware of the complete syllabus. Important topics and exam pattern.

Refer previous year papers to understand the exam pattern and level of questions. Once you complete one topic solve MCQs related to them.

Give importance to NCERT books as syllabus is based on them.

Practice as much as you can. Solve complete mock test series to check your performance level at regular interval of time.

All the Best for your Preparation!!