That puppy is way too young for vaccinations! She still has immunities from nursing which will block the effectiveness of vaccines given that young. This breeder should be ashamed for putting the puppies at risk of a reaction to ineffective vaccines
You say this situation is beyond your control, but you have the power to walk away. I would advise you to run as fast as you can from this so-called breeder and wait to get a healthy puppy from a reputable breeder.
In a puppy this young, the risk of hypoglycemia is very high. I question the general health of any puppy produced by a breeder like this. Did you know that Yorkies are 36 times more likely to have a liver shunt than all other breeds combined?
Please read Buster's story. He was 2.5 weeks older than this puppy, too. Hopefully it will make you re-examine your decision:
http://www.yorkietalk.com/forums/sic...k-he-sick.html