Create an API Endpoint called something like “UpdateTooLongItems”.
Add an action that does whatever processing you’re looking to apply to the too long items.
Then add an action that calls the API endpoint itself with the search you currently have in the only when.
Then you just need to kick off the UpdateTooLongItems once and it will run in perpetuity.
Put the every x seconds into the scheduled date on the API endpoint call by using current date/time + 3 secs.