My workplace is a bit backwater when it comes to this. Without the changed birth certificate I can't change my name in all relevant places: mail, outlook, SharePoint, Teams...
My immediate Boss is quite supportive though.
I'm half way there in my team coming out so half of it knows my name while the other will use my Deadname. I will change this next week though, I hope. It's the last week of this development sprint and I need to finish this ticket :D