create new month year label for every n records

[btwood]

Hi All, I'm trying to create a new month year in a new field for every n rows/records.  I don't know if it requires the count function or something else.  I'm trying to do this for every 1,349 rows/records starting with March 2022 and for every month thereafter for 2022.  Any ideas?  Thanks

[btwood]

@Qiu  Thanks.  The adding of +1 at end of line worked. Thanks.