Haven't tried it yet but the guide suggests you can run shortcuts on a recurring schedule.

> You can use Siri to add shortcuts to the Reminders app, specifying shortcuts to be shown at a particular time or location. For example, you can schedule a reminder to run the Log Weight shortcut each morning, or to display the Home ETA shortcut when you depart from work.

https://support.apple.com/guide/shortcuts/add-a-shortcut-to-...