Can I share a single Google login for both backoffice and frontend?

At the moment, I have google login implemented twice: once for backoffice and once for frontend. They each have their own CallbackPath. The problem here is that I have 4 domains on a single application and 3 environments that all use the same google login. This means that I need to configure 3 x 4 x 2 = 24 URLs in my google dashboard so that I can use the google login everywhere.

I was wondering if I can share the CallbackPath in the configuration of google login between backoffice and frontend so that I can cut this amount in half. Does anyone know how to do this?