Ah, I thought you were asking a general GrapheneOS setup question. I somehow missed the “for now”. Now I get it, you want to know what you can do in the meantime… Well phones come with a load of bloatware. And I don’t think you can get rid of the Google stuff on a normal phone, let alone on a Pixel. Not connecting it to a google account is a start. But it pings Google every few minutes and transfers data anyway. You can go through all the settings and disable all targeted advertising and cloud services. Apart from that I’m afraid there isn’t much you can do. As far as I know the google services run with more privileges as “system-apps”. And unless a phone is rooted, there is nothing that can be done on the device itself to prevent such an app from talking to the internet. Well you could use Wifi only and block everything with the firewall of your router. I don’t now your threat scenario / what you want to protect against… Disabling everything and not having a google account tied to it might be enough. If you absolutely need privacy, disconnect the device from the internet, use it just to call people and use a Linux computer to access the internet… I think you have to compromise.