Are 3 Months Sufficient for CDS Preparation?

Preparing for the Combined Defence Services (CDS) exam is a dream of thousands of aspirants to join the Indian Armed Forces as officers. One of the most common and anxiety-filled questions that the candidates ask is: 3 months is enough for CDS preparation?

Yes, 3 months are enough for CDS preparation, provided you have basic knowledge about English, Mathematics, and General Studies, follow a proper CDS exam preparation plan, practice previous year questions, and revise regularly.

What Is the CDS Exam?

The CDS exam is conducted by UPSC twice a year for recruiting officers for:

• Indian Military Academy (IMA)

• Indian Naval Academy (INA)

• Air Force Academy (AFA)

• Officers’ Training Academy (OTA)

The selection process involves a written examination and then the SSB interview.

CDS Written Examination Structure

Mathematics is not applicable to OTA.

This table provides a brief CDS syllabus overview, which is very crucial before forming your CDS preparation strategy.

CDS Exam Difficulty Level

• English: Moderate (grammar + comprehension based)

• General Knowledge: Moderate to difficult (static + current affairs)

• Mathematics: Easy to moderate (Class 9–10 level)

Who Can Crack CDS in 3 Months?

Candidates with Strong Academic Background

If you are comfortable with:

• Basic mathematics

• Grammar and vocabulary of English

• Reading newspapers

Then, 3 months is usually good to clear the written exam.

Candidates with Prior Defence Exam Preparation

Aspirants who have prepared for NDA, AFCAT or CAPF already have an upper hand. With revision and practice using CDS maths previous year paper book and CDS english previous year question paper easily adapt to the CDS pattern.

Is 3 Months Enough for CDS from Scratch?

This is where expectations have to be realistic.

Challenges for Beginners

• Vast GS syllabus

• Memorizing static subjects like polity and history

• Speed and accuracy in maths

• Time management during the exam

Realistic Expectations from 90-Day Preparation

For beginners:

• Clearing the written cutoff is attainable

• Scoring very high marks may be difficult

• SBS preparation will take extra work

Still, several rookies have cracked CDS with a systematic 3-month CDS preparation strategy.

Ideal 3-Month CDS Preparation Strategy (Week-Wise Plan)

A structured plan is the backbone of success.

Month 1 – Build Strong Fundamentals

English Preparation Plan

• Revise grammar rules (tenses, prepositions, articles)

• Learn 10–15 new words daily

• Practice comprehension passages

• Solve questions from CDS english previous year question paper

General Knowledge Preparation Plan

• Indian Polity (Constitution, Parliament, Judiciary)

• Modern Indian History

• Geography basics

• Current affairs (last 6 months)

The use of the CDS GK PYQ book helps to understand question trends.

Mathematics Preparation Plan

• Arithmetic (percentage, profit & loss, time & work)

• Algebra basics

• Geometry and mensuration

Month 2 – Strengthen Concepts and Practice

Subject-Wise Practice Strategy

• Topic-wise MCQs

• Analyze mistakes

• Improve weak areas

Current Affairs Revision Strategy

• Monthly compilations

• Focus on defence-related news

• Government schemes and international relations

Month 3 – Revision and Mock Test Phase

Full-Length Mock Tests

• 2–3 tests per week

• Simulate exam conditions

• Analyze accuracy and time usage

Read More: UPSC CDS 1 2026 Exam Date Out, Complete Schedule (Released), Shift & Timing

Revision Checklist for Last 30 Days

Importance of Mock Test Books and Online Tests

Mocks improve:

• Speed

• Accuracy

• Confidence

They are indispensable in the last month

Final Verdict – Are 3 Months Sufficient for CDS Preparation?

• Follow a structured CDS exam study plan

• Understand the CDS syllabus overview

• Practice PYQs regularly

Beginners may require more discipline, while experienced aspirants can confidently clear the examination in 90 days.

Recommended Books | Study Materials

Practice Comprehensively with Oswaal360 Online Courses for CDS 2026 Exams

Practice Now with Free Oswaal360 Online Mock Test for CDS 2026 Exams

Are You a Teacher? Apply for FREE CDS Specimen Books For Teachers from our end.