Dharma, have you considered removing the rice and just giving him cooked chicken? That's what our vet advised as some dogs are sensitive to rice, so it's best to get down to one simple protein while you are sorting out the source of the problem.
Pip was on purely chicken, 7/8 times a day, with Canikur probiotic paste twice a day, for the first 3-4 weeks we had him and he managed to grow and put on weight during that time with no problems.
He did have an infection but the change in diet alone stopped the diarrhoea within the first 48 hours.
We took Pip to a local VW show this afternoon. Not great, the weather was so bad most of the traders had already packed up by lunchtime and poor old Pip was so cold in the wind that we had to put his Dennis the Menace on. In the end we just bought the kids some pick'n'mix, let them go on the swings and slides for a few minutes and then left. Not great from a socialisation point of view and not great for me either given that I've still got dd's virus and going out to a cold, windy field was the last thing I needed. He came home, stuffed his food down and has been asleep ever since.
We are really noticing a difference in Pip since he got past his critical socialisation window. He's 15 weeks now and definitely more fearful when we're out and about. So frustrating that I can't take him for proper walks yet, as he's so heavy that I can't take him far. Hoping to enlist the help of my Mum to take him to a few different places in her car this week.
He has his second vax on Wednesday, then two more weeks until he can go down. 