hi,

national merit cum means scholarship is a centrally sponsored scholarship scheme, however students gets around 6000 per year one time in their bank account, nmms scholarship needs to renew in every year, however I suggest you to contact with nmms help desk to clarify your problems regarding stipend issue.

https://mhrd.gov.in/sites/upload_files/mhrd/files/upload_document/List_of_Nodal_Officer_-_NMMSS.pdf