We have two toy breed pups and we have been feeding them three times a day. They get fed at 6am, 12pm and 6pm approx. All was going well but now the one pup has not been much interested in the mid-day meal. The other pup still gobbles up her lunch but the little guy isn't interested. He picks but doesn't really eat. They have been to the vet recently and there are no health problems. Could it be he is just not interested and is cutting himself back to two feedings a day? I am just worried that he won't get enough to eat as he is growing in leaps and bounds. They are 13 weeks old and the male has almost tripled his weight since their 6 week check up and the female has doubled her weight. They are not overweight by any means but I am concerned. What should I do?????????????????????????