Rolling coverage instead of full coverage
A schedule that promises to service every area every visit will fail in a studio, because on any given evening two or three areas will be occupied by people who are mid-project and not going to move. Promising rolling coverage instead changes the commitment: each area is serviced at a stated minimum interval, and the visit covers as much as is genuinely available.
This is more honest and considerably easier to manage. It also produces better records, because an area that could not be accessed is noted rather than silently skipped. Over a few weeks the pattern of what is consistently unavailable becomes visible, and that usually points at a specific room that needs a different arrangement rather than a general problem with the schedule.
