Roll out updates at days other than Sunday
It seems like updates are almost always rolled out on Sunday morning. This may be perceived more than anything, but seems like when I sit down in Sunday school, it takes a really long time to open and when it finally does, it has a change log up indicating it was just updated.
The number of people using the app (along with the stress of doing so) peaks Sunday morning, so updating Monday or even Sunday afternoon would make more sense to prevent user frustration.
Most of our updates roll out on Saturday afternoon, as can be observed by the change logs. We have released some updates on Tuesdays or Thursdays, but a Sunday update has not happened in a very, very long time—these only occurred when certification was delayed on Microsoft’s end as part of our update submissions to the Windows Store.
Using (or at least opening) the app more frequently on the device you intend to use on Sunday should help to ensure that your app is updated when Sunday comes. You can also always manually check for updates in the Windows Store.