Hello aspirant,

Eligibility Criteria for MNS exam:

Candidates must be between October 1, 1998, to September 30, 2006.

So you are eligible in terms of age criteria for MNS exam in 2023. You almost have 7 to 8 of age till then you'll be eligible for the exam and exam is conducted once per year.

Candidates must have minimum 50 percentage of aggregate marks in 10+2 or equivalent and must have studied as a regular student.

Only female candidates are eligible.

To get more information go through below mentioned link.

https://medicine.careers360.com/exams/indian-army-bsc-nursing#eligibility

Hope this information was helpful to you.

Best of Luck!!