Has the Adrenal Insufficiency been addressed? High cortisol along with hormone imbalances resulting from Adrenal Insufficiency can cause many of the issues you mentioned, along with weight gain.

Meanwhile you’ll want to keep fluids moving in your body - at the very least pump your feet up/down while sitting. Or do calf pushups (soleus pushups) - a well researched exercise done while seated, find out how to do it on the web.

Taskrabbit is a company that hires temp/contract employees to do a wide variety of work. They do hire work-from-home, although I’d guess that might be limited. Jobs are based on whatever is currently needed. That might be data entry, running errands, assist with event set-up, or assembling IKEA furniture at someone’s home.

Technology now does great at supporting dyslexia. Try to get familiar with the tools that will help you the most often. Most smartphones will read to you the text you took a photo of. Most computers will read aloud text you have selected. The Chrome browser has good reading tools.
If you’re trying to learn video editing and there’s so many controls each with their own set of directions, try assigning a color to each button and link that color in your mind to how that button works. Adding the extra sensory feature can boost memory retrieval. Perhaps blue for background control, pick a color for sound tracking, etc.

As usual, I type long answers, so “select” this text and choose “speak” so you don’t need to read the words.