Hello and welcome.
It is always hard to tell with puppies. My Eva Luna is 14 weeks old and only two pounds, however she is sooooo fat

compare to my 7 month old P.J. Sebastian, who is long and taller at only five pounds. Does she look fatty like a ball of fur or is she stretching out like an older dog?
Is she a good, quick eater? Or does she take her sweet time to eat her meals? How is her energy level?
Enjoy your baby!