Hi @devvv4ever, thanks for the reply.
I have followed these steps and am using the App Password method.
When holding onto the Address Book for carddav and clicking “Properties” within the app, it shows the following Address URL: https://www.google.com/carddav/v1/principals/MYEMAIL/lists/default/
When I visit this URL in my browser, Google just shows a 404.
However, as mentioned, caldav is working as expected, so I think that my setup process was as expected.