If she won't eat, you'll have to entice her somehow
My Luna's kibble was too hard and big for her tiny little mouth, and she was 2 pounds at 10 weeks. We almost lost her because she wasn't eating enough, and I didn't pay close enough attention. Anyway, if your baby seems to be having trouble chewing her food, you could soften it with some water and smoosh it a little. She should be eating some kind of kibbles at the breeders, so make sure that you get what they're feeding her so as not to upset her tummy with a new food. If you don't care for the food that she's on for any reason, then you can gradually change it later on, after she's settled in.
If she won't eat the softened kibbles, then you could try adding a tiny bit of canned food, and for most puppies, that does the trick
Just a small amount is all you need, too much can make runny poop and you don't want that
Get her vet checked by your own vet as soon as you get her, that day. Make sure she's free from parasites, fleas, ticks, worms, etc. Have them thoroughly check her as much as possible for any congenital conditions.
Oh, and learn how to shuffle when you walk, to help prevent stepping on her. They are SO SO fast and can run right underneath your foot while you're stepping down on it, with horrible results. We just had a member here (a friend of mine) that lost her tiny baby this way, and it was so hard on her, but especially her boyfriend, as he was the one that happened to step on her. So BE CAREFUL, k?
An xpen is a lifesaver, and so is a crate. Read here about all that by doing searches
Good night, and let us know when you get your baby
Can't wait to see pics!!!!!