First be sure that the loose stools is a real problem. For it to be a real problem, he should loose weight due to loose stools. If he is gaining weight then you should be not really concerned about 2-3 times loose stools.
A stool examination will help. It can show if there is acidic ph or reducing substances - which can be present in lactose intolerance
. Lactose free diet will help in such cases. Infestations like giardiases can be picked up by stool examination which could result in malabsorption
. Probiotics can be tried after discussion with your doctor.
Seeing a good pediatrician
Take care. Don't worry he will be fine.
Dr. Balaji Chinnasami MD
Assistant Professor - Pediatrics