Well sorry those suggestions are not your answer. If you ever did want to do chiropractic therapy, many of them do not manipulate in the sense of turning your neck. There are many gentle techniques where you just lay flat down or face up and either hands or usually instruments are used. That is awful if someone actually messed up your neck or artery doing an adjustment!
I am aware of the ascorbic acid/ l-Lysine therapy you are taking. I guess you have found it, but a man named Owen Fonarrow has a forum you can find at the vitamin C Foundation where many people are involved in that therapy and discussing it.