When I think they need it. I usually see some loose stools and have found a gruel mix firms it right up again. Too much milk? too rich? I don't know, but by 3 wks, mine seem to do better w/ some bulk in their diet. I know of others that don't feed until after 5 wks but it just hasn't worked for me. Anne
I feed raw food and they get their first ground meat meal at about 2 1/2 weeks. By 3 weeks they are listening for the food pan and chowing down.
I also add Puppy Gold to the meat (the mother has been eating it for weeks and continues with it until the puppies are weaned) to make sure all the nutrients are there.
I start at the same age as well. Here's a question though. We are doing 4 feedings. When do you all normally find they can do fine on 3? I am looking to sleep through the mignight hour again! LOL