For your 13 month old, how is her weight? Can you just faintly see her ribs? Does she have a nice waist? There is really no "set" amount, each dog is different in built. How tall is your 13 month?
For your puppy, what did your breeder tell you? That is your best source? Personally I like to keep a puppy a bit on the "plump" side till 4 months or soโฆ I have had experiences with a puppy getting sick and had he not carried a bit more weight, we would have lost him. But again, your breeder should be your best resource....
And what kind of food are you feeding? The better quality food the better for the dog...