can you cancel an icloud backup in progress?

If your iCloud backup is taking longer than expected to complete

1. Check that you're 👉 connected to Wi-Fi.
2. Check your upload speed.
3. Leave your device connected to power and Wi-Fi for 24 hours. If your backup still isn't done, 👉 archive important data then 👉 contact Apple Support. 

The information that you are looking for exists in this article that you were reviewing earlier 👉 If you can't back up to iCloud

Axel F.

You can’t cancel an iCloud backup, but you can cause it to fail by disabling Wi-Fi.

I try to cancel iCloud back up from another iPhone