2D mini map with Viewport

Godot Version

4.2

Question

I am struggling to figure out how to have a viewport just show the current game screen just in a smaller version using viewports., this is in 2D

I see creating this exact thing is incredibly easy in 3D, as per the tutorials I see. I have yet to come across a 2D tutorial that explains the process well or really at all.

If anyone has a link to a good tutorial I can learn from or any advice, that would spectacular.

Thanks

You can use this tutorial