Below is how to stop automatic updates in windows 10 you can try.
Schedule restart times.
When a new update has been downloaded and you have installed it, Windows 10 will prompt you to schedule a time for PC to restart. Windows may be scheduled restarts for active hours in the yearly update.
Meter your internet connection.
The easiest way to prevent windows downloading updates is to use a metered internet connection. To set metered connection on, you can go to settings > network & internet > Wi-Fi > Advanced options and Set Metered Connection.
How to stop automatic updates in windows 10 easily
Disable automatic driver updates.
Right-click the start button and click control panel. Go to system and click Advanced System Settings to open the system properties window.
Open the Hardware tab and choose Device Installation Settings.
Click no and click save changes.