scheduling backups , You can stop the plan after X hours.
Let's say you start plans at 7 PM and you specify "Stop the plan if it runs for 12 hours" and at 7 AM it will be interrupted. Though it's not exactly what you're asking for, this could do the trick.
It works great for file backups since it will continue where left off, but interrupting an image-based (partition-level) plan would require to re-upload everything all over again.
Thanks