The 90-day plan for JEE Main, written for the student who is behind.
What to cut, what to keep, and what to test yourself on every Sunday from now until the exam.
The last 90 days before JEE Main are not the time to start a new book or pick up a new chapter. They are the time to do fewer things, better.
If you are behind — and most students sitting JEE feel they are — the temptation is to cram. That is the wrong instinct. The right instinct is to triage.
Start by listing the chapters you know cold. For most students, this is shorter than they expect. Now list the chapters where you have read theory but not solved enough problems. This middle category is where the highest return on time lives.
Mechanics and electrostatics together account for nearly 40% of the JEE Main physics paper in most recent years. If those are not in your strong list, they should be the bulk of your next 60 days. Solve at least 30 mixed problems daily from these two chapters alone for the first three weeks.
Modern Physics, semiconductors and EM induction are high return-on-time topics. They are conceptually small but show up in 4–5 questions every year. Master the formula sheets and one good problem set.
Mock tests every Sunday, OMR-style, for the entire 90 days. Without a strict mock cycle, all the revision in the world will not protect you from running out of time on exam day.
And finally — don't change your books in the last 90 days. Whatever you have been using is the right book.