I'll give you a very helpful tip.....trim the hair off their ears at about 5 weeks old....you will be SHOCKED how much comes off and it helps the ears to stand tremendously. I've not had a pup with down ears at 8 weeks old. You'll also notice that their little nails will need trimmed before then. You are going to absolutely LOVE this entire experience from here on out!
PS Thank you for the well wishes on the knee....what an ongoing nightmare!