May sound odd but my wife used to have that problem until she was diagnosed with congestive heart failure, which is common for people with or without FA. She was prescribed ferosimide (hope I spelled that right), it’s a water pill/lasics,(in the morning) and it helps get rid of fluid build up. And that helped her tremendously. She almost never has “accidents” now. And since the Dr tried to kill her which ended up killing her large intestine(she has an ileostomy), because of that she has to make sure she drinks a lot more than she used to. That made her have accidents a lot but since the water pill she doesn’t hardly ever.