I loved my breeders diet and have stuck to it for my goldie and my new puppy too!
Ditch puppy milk.. It has no nutritional value. Also if you put food down and you pup doesnt eat it. dont pick it up and take it from them. For the first couple of weeks my boy was a grazer. He just ate when he felt like it so i left the appropriate amount down for him to eat slowly.
The diet he started on and is till kinda on follows.
Pro Plan Puppy Large Breed is great cause it has extra's in it for big dog bones. Fresh mince chicken, beef, lamb and a little pork (but not too much cause its a little fatty) and fresh veggies and fruit. Saradines in oil.
At 8 weeks 4 feeds a day. spacing it out but the biggest meal mid arvo with 1 cup biscuit, 250grm mince and half cup veggies.
Early morning 1 cup biscuits
Mid morning 500grm of mince
mid arvo as above
night half cup biscuit and 150grm mince.
My boy is just 6and a half months 27kgs and aprox 24 inch to the shoulder. Im sure his health is part breeding but i think alot is diet. But i dont know this is just what the breeder gave me and it worked. But a friend of mine uses optimum on her cockers and they have the best shiney coats and are really healthy. But please dont use pal! its cereal based so you have to feed them 4 time as much to get the nutrition from a meat based dry food. And tinned is pretty much the same except its water. Either way they get fatter on that food and not as healthy. The higher quality the food the more solid, less frequent and less smelly the poo is too!
Anyway...
Happy Goldie