I have a 4 1/2 month old male olde English bulldog. He seems to have a sensitive stomach. From day one he has had loose stools and very frequent, like anywhere from 5-7 times a day. I only feed him 1 1/4 cup in am and 1 1/4 cup in pm and about 1/4 cup in the afternoon. My vet had put him on royal canin gi high energy for his stomach but didn't really help she also did a round of probiotic which maybe helped firm them up some but not the frequency , so at pet smart they recommended natural balance synergy. that has helped firm them up but not the frequency. any suggestions. his coat is great, no itchy skin. he does great just a lot of poop.