cupping recovery

Hi,
My lowrider has been experiencing cupping, probably due to being rootbound I guess. I just transplanted it...how long does it take to recover? Could the cupping be from something else? I have six plants all between 5-7 inches, 24 days and only one has the cupping.
Thanks for your feedback!

Could you post some pics man?
It could take 2-4 weeks or maybe longer.
Sometimes root bind can be so bad it wont get better and your stuck with a smaller plant...
I've gotten anyway with it before but it will take veg time to fix.