Hello,

You are still eligible to apply for CDS 2 2021. Candidates who are in the final year of the qualifying examination and who have passed in the qualifying examination that is Bachelor's degree are eligible to appear for CDS. The notification for CDS 2021 is not yet released so you have time to appear for supplementary examination and pass in the backlog subject. You need to obtain the results and certificates on or before the cut off date specified. You can appear for CDS provisionally if you qualified in the written examination then you will be called for SSB interview you need to provide the Educational certificates on the first day of the SSB interview if you fail to provide the Degree certificate then your candidature will get cancelled. You also need o fulfill the age criteria which is as follows

• Indian Military Academy and Indian Naval Academy: 19 to 24 years
• Air Force Academy: 20 to 24 years
• Officers' Training Academy (Men) and Officers Training Academy (Women, Non-Technical): 19 to 25 years

You can click on the below to know more details

https://competition.careers360.com/articles/cds-eligibility-criteria