It's probably not what you wanted to hear, but when I was in a t relationship that became just retraumatizing each session (2 per week) I had to just quit. Spacing out more would have just made me (speaking only for myself) long for ex T more of the week. To do it, I held the thought that continuing was hurting me, and that no matter when I quit, it would hurt.

It was very hard. I am sorry you are going thru this.