My fairly new p-doc (since November--had someone different before) at first seemed fixated on focusing on my OCD. I finally managed to convince her that my more pressing problems right now are anxiety and depression, with the depression being the biggest concern. Like, eh, yeah, I've had OCD my whole life, I wash my hands more than necessary and worry about food safety and germs. But the anxiety (and lately depression) have a much greater impact on me overall.

I would just say maybe that you'd rather focus on treating the symptoms you're having right now than on a particular diagnosis? Like say what you're most concerned about right now is x and y (that's what I did). I doubt hobby hopping, whatever it signifies (probably that you're just trying to find the right hobby for you!), is the biggest concern right now, so tell her you're not worried about that.

Also, could you maybe have your therapist write her a note?