My Nest and multiple Google accounts are a total mess from the migration. Is it possible to delete everything and start over? Have two homes.
Used Nest for years with no issues. Now it is a mess. Have too many Google accounts, too. Always a guess when required to "Sign in to your account"
I want to be clear on what you're looking to do before I give specific steps. Do you want everything unified under a single Google account and have that to be a new account, or are you trying to consolidate everything to an existing account? There are ways to do both, but let me know what would be preferable for you and we can jump into the process.