
Puppies usually stay on 4 meals a day till they're 12 weeks old, so ideally you'd need to fit in another meal of puppy food to make sure they get all the nourishment they need to grow properly. I won't say my thoughts about a breeder who'd sell two puppies to the same home (no slight to you, but it's generally Bad Practice) but they really don't
need a milk meal at that age, although they usually like it! It also makes sure they have a good drink, which
is vital.
I've only ever known one dog to have problems digesting milk so I'm not personally convinced about the lactose-intolerant theory, but it seems to be a very widespread belief, and not giving them milk won't damage them so it doesn't really matter!