K.K.
My son had the same problem. I changed his eating habit and it helped. Fiber will be good for him. Make sure he is going to the bathroom every couple days if not you may want to give him an enema. I shop at an organic and all natural store now and that helps a whole lot too. If you are interested in learning more about it let me know. I hope things get better for the little one. See a gastrologist if it gets bad he may not be processing food though digestive well.
About me; work at home mom of three kids.