
I would agre with the other poster, I have started mine as early as 10 days when they seemed to ned it, starting with twice daily, then 3 tinmes then four timnes a day therefater. I never restrict the bitches access to the pups, just aim to try feeding them when she hasn't been with them too recently.
I start with soaked puppy foor mixed with puppy formula Milk. As pups get older the amount of puppy food increases and the proportion of formula reduces, but I keep my medium breed on an ounce (before mixing with water) of puppy formula each once well onto feeding to going to new homes. I always make up a bit more fod than I guess they might eat, and let mum polish off any left overs.