It’s pretty funny to me that this even got out the door with a fixed 4:45 AM backup time. Anyone who has released scheduling functionality before would know that the very first question asked about this feature would be “how do I change the time?”
This is the “cleanest” (ha) solution in my opinion. Just run a database cleanup whenever a backup runs if that’s really the main blocker. Or, worst case, let the user know that backups before 4:45 may not include a clean database and let them decide.
Same story, NAS is off at that time… also I tried it to only backup on Sundays thinking I’ll schedule the NAS to come on earlier on Sundays- yet it tried to backup on a Wednesday 
“Cleanup Time” should also be configurable. If the NAS is scheduled to be turned off at night, an automatic backup would never be performed.
My NAS is turned off, too at 4:45
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I’m using community addon “Auto Backup”.
I’m with most other people on this thread who has a NAS that is switched off at 4.45. This is really annoying that its not customizable.
Please no, unless the pre-backup db clean is added only for automatic backups. When I request a backup manually, I wouldn’t expect it to do a bunch of cleanup first – both because I don’t expect a backup operation to change what I’m backing up, and second because I might be (impatiently) waiting for the backup to complete to do something that I might want to revert
That’s a fair point!
For the ones watching this thread:
It will be in the next version 2025.2 Beta: Iterating on backups - Home Assistant