I started feeding Rex who is 18 months old twice a day 4 days ago. The first 24 hours was great. Then he started having diarreah. I thought I was giving too much. Yesterday he had 2 and 1/2 cups for breakfast had solid poop. Then last night I gave him 2 and 1/2 cups more and woke up to diarreah everywhere. I fed him cottage cheese this morning. Am I trying to add more too much at a time. He use to eat 3 and 1/2 cups of iams in the morning. What should I do? Any help would be greatly, totally appreciated. Thanks