Seeing a new therapist

I suspect I am an OSDD system, but I am not thoroughly convinced, although DID system DID therapist Katie Keech is my friend on TikTok and told me most people don't convince themselves of dissociative disorders because there would be no point. There are no perks, and it doesn't make one special. Still I convince myself I am making up the people I saw in my head. Even though they showed me things I would not ahve thought to fabricate. My actual question is do I tell a new trauma threrapist that i suspect OSDD or just explain symptomls to have them figure it out? I am afraid maybe she will be a crap therapist. I asked for one who deals with trauma and dissociation and she kind of does. I son't know I am feeling nervous.