Fingers crossed!!! Did the breeded give you some food for you to ween Ruby off from? Or did you go straight onto JWB??
My breeder gave me 2 weeks worth to Ween, although Alfie had terrible runny poo's, even milkshake like puddles! I was really worried...so i phoned up breeder and asked for advice, he said it could be being unsettled and nervy (even though he seems fine!) we gave him Chicken and rice until things firmed up and went vets for injection, told he had to wait until tummy was not upset anymore.
Then things were fine, we have been on Royal canin since. We have weened on and off JWB, although they loved the food, the royal canin suited there tummies better, and much firmer ppo's. Each pup is different but Royal Canin (vetinary kind) comes with a guarantee that your pup wont suffer kidney stones (or gall) cant remember and their coats were nicer on Royal Canin. So many ppl have different opinions and each suit there own dog in different ways. However, keep us up dated on Ruby xxxx