I have been clinging to that cortex thickness study like a lifeline for 4 years. We've tried everything, and keep on trying. Truly, though, nothing has materially helped DS7.5 with his executive function, particularly in moments when he needs it most. But in the past 6 months, I begin to see a light at the end of the tunnel. I'm hoping that in 12-18 months, we look back and say "phew" - at least a little - rather than saying - "oh, that light at the end of the tunnel was an oncoming train" wink.