Hello Aspirant

The ideal time to start preparing for the CAT exam is during your second year of BMS.

Here's why:

• Early Start, Significant Advantage: Beginning your preparation early gives you ample time to build a strong foundation in all sections.
  (https://timesofindia.indiatimes.com/education/news/top-5-benefits-of-early-exam-preparation/articleshow/99358087.cms#:~:text=The%20major%20advantage%20of%20starting,the%20pace%20of%20your%20preparations.)
• Consistent Practice: Regular study habits during your second year will help you maintain momentum and avoid last-minute cramming. (https://www.aakash.ac.in/blog/why-should-you-start-preparing-early-for-entrance-exams/)
  

The ideal time to start preparing for CAT is now, you will get plenty of time but concerning your course, here's a suggestion

• Second Year: Focus on building fundamentals in Quantitative Aptitude, Verbal Ability, and Logical Reasoning. Develop consistent study habits and start practicing basic questions and puzzles.

• Summer Break: Join a coaching institute (if desired) or start self-study with structured materials. Increase the intensity of your preparation and keep taking mock tests regularly.

Hope this helps