Hi, I went through a form of therapy called Internal Family Systems Model or “Parts Therapy”. It helped me to reconnect to me and recognize why sometimes I sort of slip into other aspects of me. When the therapist I was seeing suggested parts therapy I thought she was a little strange. But, for me it worked. It is something to research. Maybe it could help you as well. As the specialist you see, the one that doesn’t believe in ADHD, I am sorry that you have to deal with that nonsense.
Best of luck.