If the changes you want to make is because two of your backups are in close proximity, then why do you want to add one more backup and store it in a different location, when you can separate the backups in close proximity by moving one of them to this location you have in mind. Take note that too many backups can be complicating and if you are not at risk of a physical or a local attack two of your backups can be in close proximity, but just not on the same device.
This is not a good option, except the device is airgapped, if it is online it is not recommended even if it is encrypted