Separate them and work with them separately. Any breeder worth his salt would not sell you litter mates to begin with because the dogs will bond to each other an not to you.
As said above, you got two puppies and 5 times the work. To have them bond with you they cannot be together at all.
Separate them and take on the work or rehome one if you cannot take the significant amount of time this will take.
As said above, you got two puppies and 5 times the work. To have them bond with you they cannot be together at all.
Separate them and take on the work or rehome one if you cannot take the significant amount of time this will take.