As someone who also has ADHD and has been through a very similar fluency shaping course multiple times, I just don't know if it's a good fit. It takes a lot of focus and energy to pull fluency shaping in real scenarios, and let's be frank, that's not our strong suit lol. The comment above is good advice, and I have had much more success doing that and I am more at peace than I ever was chasing fluency via those techniques.