I would have you vet check to see if the cartilage in the ears are not broken. If the cartilage is good, just have patience They will eventually stand. Mt pup is 17 weeks and we have had one ear up and then fall. But I can tell they will come up as they are uncurling and when she puts her head down, they straighten up as well as when she sleeps on her back. Her mom's ears did not stand up for quite awhile when she was a pup. Also I feel if they are going to be large dog, it takes a little longer. Themother GSD is 86 pounds and Piper appears she be large also.