I want to first apologize about thread jumping. I was searching for discussions on Complex Trauma when I came across the two of discussing the subject. I had written my two sense when my computer decided to intervene.

All I can say is from my experience is complex trauma needs to be worked on slowly. Focusing on trust with the occasional series of EMDR sessions when the frozen emotions choose thaw. I relate my experience with making progress recovering from complex trauma like letting the air out of a balloon.
Treatment for PTSD is to pop the balloon and face the experience over and over until the emotions lesson.
CPTSD needs the air "emotions" to be let out slowly. For me I loose my grip sometimes my choice sometimes not on the balloon and the air "emotions" comes out too fast. It is those times I underwent EMDR which is it's own topic. Helpful but OMG. There needs to be care to not let the air out way too fast. I did that because of unspoken fear and distrust and blew up my Therapeutic Relationship with my T.

So all I can suggest is to go as slow as you need to. You are in control of the pace of things not your T's. It is your life and you are in charge of your life not your T.

A good T will respect you and your decisions.