Help! My son, 5 months, has been having foamy green mucus stools . The gi recommended eliminating dairy, soy, eggs , and nuts from my diet. I have done so but today I noticed his stool was semisolid and contained what looks like solid fat (like you might see on a cooked steak). This doesn t seem normal to me. O am also trying to correct a possible foremilk/hindmilk imbalance due to tongue tie.