Thanks for asking, Sally. I'm trying to keep remembering to keep my mouth shut. Mind over matter.
I'm checking on it more often and when I find it's dropped open, I shut it and concentrate on keeping it shut. Not easy to do when it wants to drop open.
This may be just a nervous habit caused by tension, I'm thinking.
Sally, that's good news that you're physically dandy right now! MS is a lonely disorder, isn't it? People don't understand our limitations. Or they don't want to, maybe.