Hey! I don’t know how you’ve configured it, but if at all possible, you would need to split these into different tasks. There doesn’t even seem to be an endpoint in Google Drive’s API to create multiple files.
If I was solving your problem, I’d use a different app as a sort-of “dropping off point” and trigger from that app. Perhaps look at something like Airtable (but even then, you’d need to either create an app or a webhook to achieve this for multiple records) or basically anywhere where you can create multiple records as line items, and then trigger each record individually to create a file in Google Drive?