Was there any fever? Any foul smelling of stool? Was stool associate with mucus or blood?
If thes are present it is suggestive of infectoius mostly bacterial diarrhea
and reuires antibiotic therapy to control loose stools.
Nothing to worry until hydration and oral intake, and child activity is good.
Give oral rehydrating solutions sips by sips in equal amounts to the losses of fluid in stool to prevent dehydration
and continue zinconia and econorm
sachet one sachet per day and stool can be given culture and sensitivity to find out the organism and its response to suitable antibiotic.
Hope your child recover soon.