software update – Remove macOS Big Sur “Upgrade Now” button in System Preferences

I have red circle notification on my System Preferences icon to inform macOS Big Sur update is available. There is also an Upgrade Now button in Software Update:

System preferences with (1) red notification

Software Update with Upgrade Now button

They annoy me since I did not ask anything, and I don’t want to do the upgrade before a few months.

Is there a way to remove them ?