Topic: Setup 2 PS5

How do I setup 2 different ps5s at 2 different households and use the same login account?
This is for a child that goes back and forth to mom and dads.
One at mom's
One at dad's.

So all data will be same no matter which home the child is at.

I assume the child already has a profile, just log in on the 2nd ps5 using the same profile details (email, password etc.). If they don’t yet have a profile, create one in the one os5 and then use that profile on both.