You can’t run a Salesforce Scheduled-Triggered Flow every 17 minutes. Scheduled flows support Once/Daily/Weekly, not “every X minutes.” An Autolaunched Flow also won’t self-run on a timer.
Good news: you can do this without Apex by using a Record-Triggered Flow with a Scheduled Path that re-schedules itself every 17 minutes per record until the case is clean. This pattern works great for “poll every X minutes until resolved.”
- Needs_Evaluation__c (Checkbox) – marks records that should be polled.