Quick answer
In the last 90 days, finish weak chapters and start weekly mocks; in the last 60 days, switch to chapter-wise previous-year questions and two mocks a week; in the last 30 days, stop new topics and only revise, take mocks at your exam time and fix your error log. The plans below assume you have studied most of the syllabus at least once; if not, read the 3–4 month from scratch answer first.
Before you start: a 30-minute audit
- List every unit of the official syllabus (54 units) and mark each as Strong, OK or Weak / not done.
- Take one full past paper under exam conditions and note your score by subject.
- Use the chapter priority map to decide which weak units to fix first: foundations before the chapters that depend on them.
90-day plan
| Weeks | Focus | Weekly targets |
|---|---|---|
| 1–4 | Close the biggest gaps, foundation chapters first | 3–4 weak chapters: theory, then 40–60 problems each including PYQs; 1 full mock on the weekend with analysis |
| 5–8 | Remaining weak and “OK” chapters | 3 chapters; chapter-wise PYQs for every finished chapter; 1 mock + 1 sectional test |
| 9–13 | Consolidate and speed up | Mixed-chapter timed sets daily; 2 mocks a week; revise the error log twice a week |
60-day plan
| Weeks | Focus | Weekly targets |
|---|---|---|
| 1–3 | Fix the 6–8 weakest high-return chapters | 2–3 chapters a week: core theory and PYQs only, no long exercise sheets |
| 4–6 | Full-syllabus PYQs and speed | Previous years’ papers as full timed tests, 2 a week; daily 1 hour of mixed questions |
| 7–8 | Revision and mocks | 3 mocks a week at your exam shift time; revise formula sheets and NCERT Chemistry |
30-day plan
| Days | Focus |
|---|---|
| 1–10 | No new chapters. Revise one subject per day in rotation from your own notes, formula sheets and error log. One full mock every two days, analysed the same day. |
| 11–20 | Full mocks every other day at your exam time (9 a.m. or 3 p.m.). On other days: revise the chapters your mocks exposed, and NCERT Inorganic Chemistry line by line. |
| 21–27 | Light mocks or half papers, formula revision, sleep fixed to your exam time. |
| 28–30 | Only revision of notes and the error log; check your admit card, centre and exam day checklist. |
A day in each plan
- Morning (2–3 hours): your hardest subject or a full mock.
- Afternoon (2–3 hours): new chapter or weak-chapter practice, timed.
- Evening (1–2 hours): PYQs for the chapter you just studied, then 20 minutes of error-log revision.
- Fixed sleep of 7–8 hours. Missing sleep costs more marks than the extra hour gains.
Track every mock and mistake in the free mock tracker. If your scores are flat for three mocks in a row, the plan is not working: look at your error reasons before adding more hours.
Is 90 days enough to prepare for JEE Main?
Ninety days is enough to improve a lot if you have covered most of the syllabus once. From scratch, aim to qualify and use Session 2 or another year for a top rank.
How many mocks should I take in the last month?
About 10–12 full mocks in the last 30 days is plenty, as long as each one is analysed. More mocks without analysis rarely raise scores.
Should I start new chapters in the last month?
Generally no. Revising and practising what you know gains more marks. The exception is a short, high-return chapter you can finish in two or three days.