How did EMDR help you with Fawning?

At what point did you notice a shift, and was it anger that surfaced and needed to be integrated? I’m wondering what it takes for the nervous system to recalibrate during EMDR and start responding differently.

For context, I have CPTSD and there are days when I feel a lot of anger because I didn’t stand my ground the way I wish I had in past relationships - and it's beyond frustrating.
Any words of wisdom would mean a lot!