Freeze response after nightmares

[Stussy7]

As you all know, CPTSD causes constant nightmares.
After a night of horrific nightmares last night, I have gone into freeze mode and have totally shut down.
My husband asked if I wanted to talk about the nightmares, but I said no.

So I was wondering...is it better to openly talk about the nightmares, or is it better to just distract yourself and try and forget?
Maybe if I talk about it next time, I might not go into shut down mode?