I just got a GSD female puppy 8 weeks old on 23 December.
What ever food you decide to give yours, dont change it too quickly.
Their stomachs are very sensitive. Can get diareea and loose weight.
I'm feeding mine biologcal / organic meat with some dried food - 3 small portions a day
How much exercise are you giving yours ?
I'm not sure how much to give at this young age
( I'm inna wheelchair, struggling a little with the walks on leash.
Soon I'll be getting helpdog training which will be great ! )
Mine is now 9 weeks
I'm starting puppy classes in 2 days
Our dogs are both GSD female puppies same age
my email is firstname.lastname@example.org
incase u like to share experiences ?
I'm over in Amsterdam, The Netherlands