How much do normal sized Papillon or Havanese pups weigh at birth? ?

Through some very unfortunate circumstances my Goldendoodle is now a foster mom to 2 puppies born to a Papillon mother recent acquired by a rescue. It appears as though the father was a Havanese so the pups Havallons. How much should these pups weigh? I'm obviously going to weigh them several times a day, however I am not familiar with either breed and need to know a good starting point.