I’m not planning to add support for creating partial snapshots in add-on any time soon, but if you’re interested in setting up a slightly more hacky solution then with the latest release (v0.6) you could:
- disable automatic snapshots in the add-on, which will still make it upload any snapshots it finds to drive and cleanup old ones. It just won’t create new ones on a schedule automatically.
- Create an automation that calls hass.io.partial_snapshot on a daily schedule (or whatever schedule you want) to handle creating partial snapshots to your liking. This thread has some guidance for using that service.
You wouldn’t get staleness notifications anymore if creating the snapshot failed, but you’d still be notified if one of the snapshots couldn’t be uploaded to Google Drive. Doming soemthign like this should work flawlessly with generational backups too, if you plan to use that.