OK… started looking at who’s close to you of personally known driving areas. Looks like you are several hours away from the folks in Geneseo, Saratoga, Mid-Hudson etc. Unless you have connections or know clubs in your area, I’d suggest checking into a few people who are in the Scranton/Bath area - about 1 hr away.
As Diane said your BEST bet is to hook up with a local club. From what I remember when we worked with a local therapeutic group, NARHA requirements had them working closely with drivers to build their skills for quite a while.
I know of a lovely trainer south of Scranton - closer to Easton for her barn and a terrific set of ladies who work with minis further south. Our club Hunterdon County Horse & Pony Association is about 1-1/2 hours away, south of Route 78. There are also some drivers up in Sussex Co NJ off Route 80. I’m not sure what we can do for you, but we can try to help.