In Cloud works AWS S3 connection, user get to choose file from dropdown.
If a similar file is generated month on month with a slight change in name (For e.g.: ABC_Apr22, ABC_May22 etc.), then user will have to manually change the data source and there will be no automation for this.
I recommend giving asterisk/wildcard (ABC*) feature that allows Cloud works to automatically pick up the file without user having to manually change the data source.