Retrieving iCloud backup from a week ago for an iPad

Hi. Just wondering if there was anyway to find an iCloud back up from an iPad from a week ago. I have a few devices and my son uses one for school work. I needed to update the iPad so did a reset and didn’t restore so create some more space, not realising it would delete all the data from his school app. It is not showing up when I go to restore but older ones from other devices are. Any chance there is a way to find it?

[Re-Titled by Moderator]

Original Title: Finding iCloud back up