I recently reviewed a book written by an author who identifies as gender nonbinary. I wanted to respect their pronoun preference, but not writing in this mode on a regular basis I found it tricker than I anticipated. The experience prompted me to write about how we just need to come around and accept singular they (already!), and that we owe it to others to honor their pronoun preference.
https://mypointbeing.com/2023/01/30/singular-they-and-respecting-an-individuals-pronoun-preference/