Make a routine for yourself, Just a list of the subjects you want to read daily in the upcoming days. Get a copy of the syllabus for Mains printed, This is to keep a track of how much you are prepared. Make a list of the daily goals for the next day before bedtime After waking up the next day, see your list, get a bearing of what you have to do for the day and enjoy completing your goals. Adopt a recreational method of your own, as surprising as it may seem, this is the most important thing you have to do in the last few months of JEE Main/ Advance preparation. Mindset is the most important thing that differentiates between the toppers and the others during JEE, so always stay refreshed mentally. Solve as many practice papers you can, If you feel you are prepared in a particular subject, go through the previous years question papers and solve them keeping in mind the time you have allotted to that subject for yourself during the actual exam. Focus on improving your speed and accuracy. Last week’s preparation, Don’t start on any new topics. Go through the topics from the JEE Main/ advance syllabus and make sure you aren’t missing out on any, especially the fringe topics, like the last 2–3 chapters of Physics, Chemistry and Math. Previous years papers have exactly JEE Main/ Advance standard questions while some practice papers might have a higher standard, Solving them would lead to a decline in confidence level. Enjoy your family time and don’t devote too much time in talking to friends and knowing how much their preparation is, if possible, don’t talk to them at all. Believe in yourself. The day before D-Day, Don’t go anywhere near JEE books, if you can help it. Enjoy the whole day, of course don’t do anything reckless. Listen to songs, read story books, see comedy videos on YouTube etc., get a good night’s sleep. The D-Day, approach the most important day of your life as if it’s just like any other day. Stay cool, calm and focused. Enjoy solving the exam, don’t treat it as a life-changing event. It’s just another exam.

For more information, you can check this out

https://www.google.com/amp/s/engineering.careers360.com/articles/how-prepare-for-jee-main-in-6-months/amp