I've been doing the same. Even more so lately.
Although I've been skeptical of Proton, I've moved my calendar there. I was already only using GMail for junk, since I stopped using it around 2017. I got rid of their authenticator too.
I still need the account for some things since I have an Android phone. I make sure I'm not logged in to it in my browser though, and use YouTube (if I must) anonymously.
I've also gotten rid of all Amazon subscriptions, and don't use their webshop.