As your child is suffering from acute gastroenteritis. The medication are very well adviced. It is good that there is no Vomitting now. Maintain hydration with ORS solution.
Loose stool generally take some time to settle.
Next Steps
Do continue with the adviced treatment.
Health Tips
Watch out for danger signs like lethargy, poor oral acceptance, low urine output. In these cases immediately rush to a pediatrician.