
Not an expert on this and not sure what breed you have.
But my last litter which was my first litter, I was advised by my mentor to feed the pregnant bitch fresh red meat, boiled chicken lots of puppy milk etc: to help her and the development of the pups.
Pups are now six months old, we kept a boy, and his bone is doing great, I fed him on puppy milk along with his other foods right up tell he was 5months old and he has alot of Red meat, steak, fish, eggs, cheese.
I am one that believes in what you feed your dog is paramount, my pup is now bigger then his mum!!!
Hope this helps, I am sure your pup will be fine xx