Hi there.

You still have time to clear CDS OTA examination. According to the rules the candidate should be between the age of 19 and 25 so , you still have attempts left.

Here I am sharing with you the link which might help you better to understand the eligibility criteria.

https://upsc.gov.in/examinations/Combined%20Defence%20Services%20Examination%20%28I%29%2C%202022