Poop for Thought

It's been 5 days and Atticus, while losing the fever, still has diarrhea. He's drinking plenty of fluids and doing the B.R.A.T. (bananas/rice/apples/toast) thing as instructed by the hospital, but, or should I say 'butt'. Period. That thing just keeps going. We've used more diapers in a week than in the previous month. Any ideas out there how to steady the flow?