Time management
Clearing JEE in the first attempt is no joke. You should make a list of important topics and complete them first. The second step is to learn to say no to friends and family. You do not need any distraction. Concentrate on your best subjects first and then, later on, shift to the hard ones. In the end, set time duration for every task and topic for the day. Make sure to complete it in a stipulated time period.
Make a plan
Only you can understand what is more important and quicker for you every day. Make a schedule of your day-to-day life and studies and stick to the schedule. Make a room for relaxing as well. Proper sleep and sufficient time for eating properly are also important. Make sure to include every subject in your daily schedule.
Understand the syllabus and exam pattern: There is no use of running in the dark. Understand your syllabus and make sure to stick to the exam pattern. You can easily understand the pattern with the help of old papers and mock tests.
Coaching classes
Coaching is very important to clear the exam. You have two options online and offline classes. If you are looking for face-to-face interaction then you should choose offline classes.
Study concepts and find solutions: It is all about how you prepare. Make sure to understand the concepts and make proper notes for quick study.
Time bound practice
Mock tests are the best way to check your exam solving pace. Improve it as much as you can.
By keeping the above mentioned points in mind, you can easily crack JEE in the first attempt.