HI,

Scoring 120+ marks in JEE mains is not that difficult providing that you have cleared all your basics concepts and all your syllabus have been thouroughly completed. You need to be determined towards your time table and study routine. Practice difficult previous year question paper after completing the whole syllabus of PCM (Physics, Chemistry and Mathematics).

Further, below are some of the best Preparation tips for JEE mains :-

• Prepare A Well-laid Plan
• Draft a daily schedule.
• Prioritize the topics that require more time and relevant to the subject.
• Stick to the routine and pay special attention to problems.
• Get Hold Of The Syllabus
• Manage your time effectively
• Understand Basic Concepts
• Before delving into JEE preparations, know the JEE syllabus and understand the basic concepts present in the syllabus.
• Evaluate your knowledge on basic concepts.
• Make notes on required topics.
• Choose The Right Study Material.

Hope this helps.

Good luck.