To force a scheduled cleanup to run between schedules you can run a manual cleanup at any time.
Open Scheduling and cleanup
Select Scheduling and cleanup in the left menu. Open one of the existing scheduled cleanups or add a new schedule.
Run now
Adjust the schedule if necessary. Once you've made your changes, scroll to the bottom of the screen and click Save.
You can preview the outcome of the cleanup by clicking the Dry Run button.
Then, select Run Now to start the cleanup process.