If you have the w7 OS and the driver disc then you should be able to go back.

It would be a good idea to make a backup of 'your stuff' before doing this.

Keep in mind that you have less that 2yrs of support for w7.

Since you have w10 pro you can delay upgrades and updates.
Which is probably not a bad thing to do as it gives a little time for the dust to settle.
If msft pushes out a bum update let other people report the issue and give msft time to send out an update to the update.

https://www.computerworld.com/article/3005569/microsoft-windows/how-to-defer-upgrades-and-updates-in-windows-10-pro.html