As for VR helping with the fear of heights…I started skydiving in the early 70s when I was in the Army (at Ft. Bragg skydiving is a very cheap hobby). I took flying lessons in a Cessna 150 Aerobat, which included ACTUAL spin training. 
In an airplane or jumping out of one, heights don’t bother me. Put me on a ladder and my legs turn to rubber at about 8 feet off the ground.
Yesterday I had to get up on my roof. My legs still haven’t recovered.