Looking For Open-source/public Client-therapist Transcripts Dataset

I put out an AI therapy chatbot, and I’ve used a few publicly available transcripts I’ve scraped together from here and there, but nowhere near enough for a proper fine-tuning and real analysis of it’s ability to approximate ‘real’ therapists. The one place I found, which actually feels extremely convincing, is fiction.

There is the publication by alexander street, Counseling and psychotherapy transcripts: volumes 1-3, but always blocked by university students/researchers only.

Anyone know of alternatives or a way to access that?