Great to see.
As a parent I have to admit to using the wrong name 1/4 of the time for any of my girls. Thank heaven they're all girls or I would undoubtedly be misgendering them too(as far as I know, they are not trans).
It is frustrating when it feels like someone is calling you by the wrong pronoun or name on purpose. I do think it is hard on parents, if only because it is a habit.
Hope you continue to have positive progress and better days.
Warmly,
Joanna