So, I don't know if this helps at all. But, I'm an SLP grad student and I worked with a gentlemen who stutters over the summer. We were working on desensitization and acceptance of his stutter. We used watching himself in the mirror while speaking and recording videos of him speaking and watching (and analyzing them) as desensitization task. My supervisors always tell me that if my client doesn't understand why I am asking them to do something then I am not doing my job. Which make sense to me because I won't do something my supervisors ask me to do if I don't understand why I am doing it. I would ask the SLP to explain the rationale behind what they are asking you to do.