I think the most productive thing I can at least try to do is to raise awareness among lawyers, doctors, and all professionals involved. No one has the time to dig into it as much as I did, but perhaps I can organize and present our current knowledge as clearly as possible. The book is one little step in this direction.
If you have the requisite "knowledge, skill, experience, training, or education" you can testify as an expert. No need to be a lawyer, don't need to be a doctor.
You gave yourself that knowledge and your knowledge exceeds that of the typical "they shook the baby" expert. I'd go with you any day.