I'm sorry but I know nothing about that condition
I hope that the breeder would help you with this, along with your vet. If this is a congenital condition, the breeder has a responsibility to the pup to make sure that it gets the proper treatment, and to help with the cost. Also, if this is a congenital issue, the dam and sire of this pup should be neutered and not bred again.
I wish you and your little one all the best
!~