I've been there. The confirmation letter on change of address. Taking the cell phone off the account. Even opening a new checking account. Each one is a little stab to the heart.
Just know none of those things are permanent. 1-2 months after doing those things, my W is slowly moving back into reality. Way too early to think about reconciliation but she's at least thinking about "us" and acting more how she used to than the alien she became.
So those things do hurt. Just don't focus on it. Keep working on you and worry about what you can control.