Colt is 64 days old today, he's been with me for almost 2 weeks and he is showing improvement in his ears! I am not sure if it is natural or from the calcium he is taking in his daily intake! But the left ear seems hopeless!
My boys ears looked exactly like that, then up, then down, all over. They were at complete attention at 6 months. This is normal for a GSD pup. Keep giving him safe things to chew on to build those muscles. It's common for their ears to drop during teething as well.
I remember seeing one of my boys ears fall right in front of me before!