I have not been closely following the W10 forum so this may very well be a repeat.
https://redmondmag.com/articles/2015/07/29/getting-windows-10-without-the-wait.aspx
Getting Windows 10 Without the Wait
The trick is to open Windows Update, but do not tell Windows to check for updates. Instead, launch a Command Prompt window with administrative permissions. When this window opens, go to C:WindowsSystem32 and enter the following command:
Wuauclt.exe /updatenow
Now, switch back to the Windows Update window and click on the Check for Updates link.
🍻
Just because you don't know where you are going doesn't mean any road will get you there.