W.W.
Welcome to mamapedia!!
If your child is disabled? Why not call the Occupational therapists that you are currently working with to find out which insurance works best with them?
CP - is Cerebral Palsy - that's a lifelong disability. Why have you not considered medicare? While MANY people can overcome and thrive, with low muscle tone and control - it's a tough disease.
I would talk to the places you are taking your almost 7 month old son to and ask them which insurance works best for them.