JEE Main 2027 January Attempt: What to Do in the Last 150 Days?

What Should You Do in the Last 150 Days for JEE Main 2027?

With around 150 days left for the JEE Main 2027 January attempt, your preparation should gradually move from simply completing chapters to revision, question practice and test-based improvement. This is not the stage to keep collecting new books or repeatedly change your study resources.

The official JEE Main website currently provides the 2026 syllabus, information bulletin and previous examination documents. Since the official 2027 bulletin and syllabus are not available yet, students should use the latest official information as a reference and update their preparation when NTA releases the 2027 details.

Divide the Last 150 Days Into 3 Phases

The exact number of days you spend on each phase can change depending on how much syllabus you have already completed. A student with 80–90% syllabus completed should spend more time testing, while someone with significant backlog needs to prioritise important chapters first.

150–100 Days: Finish the Important Backlog

Your first target should be to reduce the unfinished syllabus without trying to master every chapter simultaneously. Identify chapters that have high relevance, are prerequisites for other topics, or are areas where you repeatedly lose marks.

For every completed chapter, follow a simple cycle: concept revision, PYQs, additional questions, short revision. Do not consider a chapter finished just because you watched its lectures; you should be able to solve questions from it independently.

100–50 Days: Shift Towards Revision and PYQs

Once most of your syllabus is covered, reduce the amount of time spent learning completely new material. Start revising chapters in rotation and solve JEE Main previous-year questions regularly. PYQs are particularly useful because they show you how concepts are actually converted into questions. Maintain an error notebook containing formulas, concepts, calculation mistakes and questions that you could not solve. Revising this notebook repeatedly can be more useful than making another set of lengthy notes.

Last 50 Days: Start Thinking Like an Exam Candidate

The final 50 days should be heavily test-oriented. Start taking full-length JEE Main-style tests under a fixed time limit and analyse them after every attempt. Do not judge a mock only by its score. Ask why you lost each mark: conceptual gap, calculation error, poor question selection, time pressure or careless reading. If the same mistake appears in multiple tests, it should become one of your highest-priority revision targets.

How Should You Divide Physics, Chemistry and Mathematics?

Avoid spending equal hours on all three subjects simply because they have equal weightage. Your schedule should reflect your current performance. If Mathematics is taking too much time for relatively few correct answers, work on question selection and high-return topics instead of endlessly solving difficult problems. For Physics, focus on concepts, formulas and repeated problem types. Chemistry requires a balanced approach involving NCERT-based revision, conceptual understanding and regular question practice.

How Many Mock Tests Should You Take?

There is no magic number of mocks that guarantees a good percentile. The important thing is test quality and analysis. Taking a mock every day without analysing it can be less useful than taking fewer tests and properly correcting your mistakes. As the January attempt approaches, increase the frequency of full-length tests. Try to recreate the actual exam environment, including the time limit, and practise deciding which questions to attempt first.

What If Your Syllabus Is Still Incomplete?

Do not panic and try to finish everything at the same speed. Prioritise chapters where you can realistically build accuracy within the available time. A practical approach is to divide chapters into strong, average and weak categories. Maintain your strong chapters through revision, improve average chapters through PYQs and targeted practice, and selectively cover weak chapters instead of allowing one difficult topic to consume several days.

Talk to IIT, NIT, IIIT and GFTI Seniors

If you are unsure about how to use the remaining 150 days, sometimes a conversation with someone who has already gone through JEE preparation can help you see where you are wasting time. Through OGcollege's Talk to Seniors feature, you can connect with students from IITs, NITs, IIITs and GFTIs and ask about their preparation strategy, mock-test routine, revision methods and mistakes they made during their own JEE journey. Getting practical advice from someone who has actually experienced the exam can help you make your final months more focused.

What Should You Avoid in the Last 150 Days?

Avoid changing teachers or books repeatedly, watching lectures without solving questions and postponing mock tests until the syllabus is completely finished. Also avoid comparing your daily study hours with other aspirants. Your biggest advantage in these final months will be consistency. Completing a realistic daily target, revising what you studied and correcting your mistakes every week will matter much more than occasional 12–14 hour study sessions followed by burnout.

Final 150-Day Checklist

Before the January attempt, aim to have completed the syllabus you intend to attempt, solved relevant PYQs, revised important formulas and concepts multiple times, taken full-length mocks and analysed your recurring mistakes. Keep the final weeks focused on accuracy, speed, revision and exam temperament rather than trying to learn everything from scratch. The objective of the last 150 days is not simply to study more—it is to make your existing preparation more reliable under exam conditions.

Related JEE Preparation Guides

For a better understanding of JEE Main trends and preparation, students can also read “Will JEE 2027 Be Harder Than JEE 2026? Difficulty Level, Pattern & What Aspirants Should Expect” and “JEE Main 2026: 5th April Shift 1 Full Paper Review & Topic Analysis” to understand expected difficulty, shift-wise paper trends, important topics, and how to prepare effectively for different levels of questions. 

Final Verdict

The last 150 days before JEE Main 2027 January attempt should be treated as a transition from preparation to performance. Finish the important backlog first, then progressively increase revision, PYQs, mock tests and error analysis. If you are unsure whether your current strategy is working, talk to students from IITs, NITs, IIITs or GFTIs through OGcollege's Talk to Seniors feature and learn how they approached the final months. 

Verified Sources

National Testing Agency (NTA): Official JEE Main examination notices, schedules, candidate information and updates.

JEE Main Syllabus: Official NTA syllabus available for the latest JEE Main examination cycle.

JEE Main Information Bulletin: Official NTA examination rules, eligibility, pattern and candidate instructions.