[meeera]

Can I ask about the touch device and stylus limitation, please? My first thought was a tablet with a Swype-type keyboard, either with hand or stylus.

My main suggestion is to persist with voice recognition, with a better microphone. It takes time and training, and yes a few corrections, which are much less damaging than sustained keyboarding. I find this easiest with a trackpad or large trackball; YMMV.

Physiotherapist and OT input? Bracing, treatment, ergonomic thoughts from someone who has examined you?

Going further outside the box, and probably cheaper than very complicated assistive tech like eye-tracking : dictate and send to a human transcriptionist.