Here's a slightly-to-the-left-of-the-topic question. I've considered doing some kind of bracing with my son that wasn't all day, but just wearing a brace for maybe an hour a day - long enough to get the feel of the posture - and then taking it off again and trying to hold the posture.
Could you somehow train you muscles in that way? By slowly learning the way the brace is holding your curve and learning to mimic it? Or are the things the brace does simply not possible for muscles to ever accomplish?