This can't help in the short term, I would consider learning steno. It used to cost thousands to rent specialized equipment to do it. Now with Plover (foss), the software component is free. You just need a keyboard with n-key rollover to do it.
I wouldn't actually recommend learning on a standard keyboard. I personally use an ortholinear for typing, and that's what got me into plover.
One way this would help one disabilities to make money is that with high-speed internet, you can caption internet broadcasts or remote company meetings. There are nonprofits that you would work for to find companies that need your service.
If.