Hey Mother T!
Thanks for your feedback & I am trying a variation of your suggestion. I launder & double rinse my strap weekly, so it should be relatively clean. I had tried using a fake lambs wool seat belt cover around the strap for a couple days. It was much softer & spread the pressure point over a much larger area. It was however, too bulky. This experiment led me to purchasing some very soft fabric that would only be inserted on the inside portion of the strap, rather than wrapping around both sides, in hopes of reducing the bulk. I cut an extended oval piece of plastic from a plastic jug to insert into the back layer of 6 folds of the fabric on the side that will go against the strap. I will velcro the plastic side of my contraption to the inside of my neck strap. This concoction is currently at my seamstresses shop. Will let you know how it works and/or if my first iteration helps to solve the problem.
Thanks for your suggestion. Best regards, Brett