Hi Aspirant,
For Military nursing Service Exam(MNS) 2021, the eligibility criteria suggests that candidates must be born between October 1, 1996 to September 30, 2004. So, if we go by this trend then, it might not be possible that you would be eligible for MNS 2022 since you are mentioning yourself as March born(even though it's 1997) but the eligibility may suggest it to be October 1997 in MNS Exam 2022.
For more clarifications, you can refer the link below,
https://medicine.careers360.com/articles/indian-army-bsc-nursing
Hope this helps.
All the best!!
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