Hey there rmblood,
Thanks for reaching out to the Apple Support Communities.
If you haven't already, we would recommend removing and rescheduling the Focus to see if that's able to help with the issue; however, before scheduling the Focus to turn on this Sunday, try testing the issue by setting the time for an early date first.
If you need any help with these steps, check out this link here: Turn on or schedule a Focus on iPhone - Apple Support
Delete a Focus
1. When you no longer need a Focus you set up, you can delete it.
2. Go to Settings
> Focus.
3. Tap the Focus, scroll to the bottom of the screen, then tap Delete Focus.
4. If you delete a provided Focus, you need to set it up again by going to Settings > Focus, then tapping
.
Schedule a Focus to turn on automatically
1. You can schedule a Focus to turn on at certain times, when you’re at a particular location, or when you open a specific app.
2. Go to Settings
> Focus, then tap the Focus you want to schedule.
3. To have this Focus turn on automatically based on cues like your location or app usage, tap Smart Activation, turn on Smart Activation, then tap
at the top left.
4. Tap Add Schedule, then set the times, a location, or an app you want to activate this Focus.
Keep us updated on the results.
Take care!