Several reasons for me.

I need more than 2 sessions per week to stay stable. I was doing daily with T1, but when I went IP, the folks there freaked out about it. Pretty much they convinced him that was too much. I knew that I needed more than twice per week, so I figured out how to do that. I was pretty desperate. If I lived close to a PHP or IOP I might have done that, but there was nothing appropriate available.

Also, I have one who specializes in EMDR and one who specializes in somatic stuff. The somatic t also does EMDR and I am in the process of terminating with the EMDR t. But she helped bridge things for me.

Also, their different styles, personalities kind of guide our work together. I rarely work on the same issue with more than one of them. But then, I have lots of issues...

I don't worry about what I have told each one. If something comes up, we talk about it. Or sometimes I will say that I am working on that area with another t and the t that I am talking to will say ok and we'll change the subject. They do all know about each other.

Support, support, support. For quite a while I was so intent on suicide that I needed to know that I would see one of them the next day.

I never would have started with T3 if T1 had continued to see me daily. And even though my attachment to T1 is huge, T3 is the most helpful. She is just awesome like that.