My sister's first baby was born with H.D., but why should it be resolved at 6 weeks? Was it so minor, that it was barely noticable?
It takes approximately between 4-6 months if you're using the harness. She was wearing it for 23 hours, then after 3 months the timing is less.
She's 7 months now, and totally fine. She hasn't figured out yet that her feet have strength, but that takes time with kids who wear the brace.
I hope you have a good doctor, and that it will heal quick.
Good Luck!