My LO is 12 weeks and having excessive spit up. He generally waits about 1-2 hrs after feeding to spit up. It is mildly projectile. He is gaining weight fine. Here is what all we have tried: burping every 1 oz, in process of changing to similac for spit up, mylicon drops, his doc put him on Zantac and that seemed to make it worse. It doesn't matter if he gets 2 oz or 4 makes no difference. He often spits up 4-5 times after eating. We go see the doc Friday but does anyone have any other suggestions. It often comes out of his nose. Picture for attention.