Weaning puppies is a bit of a huge subject to cover here & all breeders have their own way of doing it, some will feed a traditional diet which includes meat, milk, eggs etc & others go for a complete puppy food/puppy porridge. There are also no hard & fast rules as to how much a puppy needs - a breeder needs to decide this by the look & feel of a puppy. If a puppy has a nice chubby body, then he's getting enough. If he looks thin & scrawny, then he's not getting enough & the food needs to be increased. I'm not sure what you are weaning your puppies onto Jess? If one of the good quality puppy diets, then I would be aiming for 4 or 5 meals a day of the food served sloppy for now (many breeders pre-soak the food in puppy milk like Whelpi or Lactol but others just soak in water), then as the pups get older, make the food less & less sloppy by reducing the amount of water/milk added. If you're feeding a traditional diet, again 4 or 5 meals, two meat based & 2 or 3 milk based. If Mum isn't feeding the pups at all, then the meals need to be bigger than if the pups were still able to take milk from Mum. Again you have to play it by ear, if you have a lot of food left after mealtimes, then you're giving too much & if it all goes lightening quick, then perhaps you might need to offer a bit more. If you are going to continue giving milky meals made with the Whelpi, then it's better if it's warm - most pups prefer warm milk to cold to begin with.
HTH
Jane