My 6 month old puppy has got diarrhoea, this is his 3rd day of having it and (sorry if TMI) it's just coming out like water. I took him to the vets yesterday and she's given some pro kolin and some Royal Canin Gastro Intestinal food and told me to wait it out a couple of days and then bring him back. He's not going frequently and can go up to 8hrs without going but still every time he goes it's just brown water coming out :( he is eating little bits of the food and is drinking but seems to have lost weight (this is weighing on two different scales - my own and the vets so could be a difference there, he does feel a bit thinner though) and is quite tired. Is there anything more I can do to help him?