• Understand the Syllabus: Knowing your syllabus in-depth can help you prepare better. Get a view of what are the topics you need to put extra efforts on and what could be avoided.
• NCERT books: they should be on your tips,"NCERT aren't important for JEE"  This attitude can cost you a lot, especially if you are not thorough with NCERT books.
• Fix a Goal that is Achievable: We often see that students end up with incomplete preparation as they target to complete all the important topics entailed in Physics, Chemistry, and Mathematics. This way isn't efficient as only 1 year is left so you should focus on short term goals and divide the subjects and topics.

Hello Aspirant

IIT JEE is considered to be as one of the most tough exam in India

If you want to be successful in it,Make sure that you have a through timetable that divides your work of both your college and IIT subjects

Physics in JEE required the most practise

so

1. Do Physics atleats 2 hours a day
2. Complete your daily targets everyday
3. Don't create backlogs
4. Concentrate on Organic Chemistry
5. Study Mathematics (first the easy topics then tough)
6. Solve various Author books
7. Divide your work
8. Try to solve mock papers as much as you can and analyze them

Regards!