Major issue on upload new App version without the Apple Watch Target

I’m writing to ask for some urgent help and advice. The company has made a decision to stop the support for the Apple Watch app. However we are unable to do so as just removing the app target is giving an error which upon searching is per 
https://developer.apple.com/library/archive/qa/qa1623/_index.html
 
We are looking to remove the Watch app in the new year with the next app release which is in Jan 2021.
Since the company no longer wants to keep the Watch App functioning, can you please help in how to solve for this?


Changing the bundle Identifier is not an option as that doing so will result in customers having to download a new app which is a really bad customer experience for us.

The app's currently on min deployment version of 10.0

For more context, Apple has an April 2021 mandate about having all Apple watch apps in WatchOS7.
The Watch app is being removed as we do not have the capacity to upgrade the current version to WatchOS7.
 
The need to support devices per the above link is going to be problematic in getting to this goal..