Hi everyone!  Gutie is 4.5 months now and is getting 1/2 cup of Fromm's Puppy dry food 3x day (7am, 12pm, 5:30pm).  I can visibly see his waistline and his ribs (both of them aren't sticking out, but I can see them without any difficulty).  He's an active dog (puppy play dates 2x/week, hiking/long walks everyday, swimming at the beach/pool, running freely at the park/cabin).  I took him to the vet to get weighed the other day on their scale and he's nearly 21lbs, but she the tech assured me…