Things that have worked here:
1. Typing rather than handwriting to get ideas down. Using PowerPoint presentations to organise thoughts with writing and dropping and dragging pictures and diagrams.
2. Noise canceling headphones. With or without music playing they reduce other external noise.
3. Mind maps. Check out the Inspirations app or website. There are other helpful programs. Inspirations can turn maps into lists etc
4. Gym ball to sit on. Trampoline for short bursts of physical activity.

I have found DD makes leaps at unexpected times in her executive functioning skills. Learning for skills isn't a continuous curve, it has plateaus and sudden steps up as different elements of skills are assimilated and ultimately come together. I am sure you are being wonderfully supportive. Hopefully others will have some tips for you.

It's frustrating when physical abilities are no match for cognitive desires!