Before I see if I can help out, one thing to keep in mind is that a red nose and a blue nose is just that…the color of the nose. It has nothing to do with a special breed or that it is rare. Bad breeders use the “rare blue nose” or “rare red nose” as a selling feature, when in reality it is just a pigment thing. They are no different than a brindle pit, a white pit, a black pit, or a tan pit. It is just a color of the nose and fur. So, the color has nothing to do with the way a dog behaves.
I just wanted to clear that up, as it seems like you are saying that the color has something to do with the behavior. They just have different colored hair like humans do.
Please explain in a little more detail what you mean by “rocking of the head”. Is it side to side? Is it up and down like she is saying yes or no?
As for the paws, yes they will get bigger. Everything grows. At 6 weeks old, the dog is barely ready to leave its mother. Between 4-6 weeks, that is when the puppy is learning to leave the litter group on its own. Most puppies should not go to new homes until they are at least 8 weeks old, as they are still developing prior to that. What you may be experiencing is a puppy who isn’t fully developed yet.
I see young puppies come into my clinic all the time that just weren’t ready to leave mom yet. Some tend to just have ear issues, and others are not neurologically sound. Some just do not have strong neck muscles yet. Have you take them to the vet for the vaccinations and to have them checked out? That would be of utmost importance if you haven’t yet.