Dd1 was diagnosed at 8 weeks, she was in her brace until 12 months as she had severe hd in her left hip. It's so much harder on you than it is on them. Dd could roll and crawl in her brace, and barely seemed to notice it unless it had been adjusted.

The best advice I can give you is to go to the appointments expecting that the time to be extended with the brace, we were told it was only going to be 12 weeks but that changed each time.