If you particularly desire aid with this query, your readers will have to realize breed, age, & situation of dogs. 12 is plenty, and your aid in feeding is also fundamental for all to outlive. Example - If she has eight nipples & 12 puppies - do the mathematics. And FYI, don't use Human milk. Goat's milk is a fair replacement. Mom's meals will have to be improved and most probably supplemented, so she will preserve creation up, and keep healthful. Best situation for Mom is interior in a secluded discipline, in which you'll track. Visitation via others will have to be removed, as those little men can comfortably prefer up sicknesses like parvo. Best of good fortune to Mom & Pups.