My daughter had the spit up type and did until she was 4 months old... NOT FUN! She's outgrown it now, and that's the good news. Most outgrow it although its no fun in the beginning. If they don't outgrow it there is a pill they can take...
Is he fussy. Similar to colic? If you rub his belly does he settle down. That's what my daughter loved because it helped settle all those gasses down. She wasn't much of a burper after she'd eat either so that contributed to the problems.
She also liked being on her belly. I'd lay her on my arm face down and cradle her neck (hard to explain) and she loved that. Bouncing, believe it or not she liked. These were in the EARLY days when we couldn't get her to settle down at all... That seemed to help with the gasses and stuff too...
We were using Aliamentum (sp?) by Semilac which was VERY expensive and helped but didn't cure anything. We simply had to work through it and wait for the day that she was over it. She took a pill for a while but I don't know whether it really helped much or not...
She was (and still is) a very tiny kiddo but never actually lost weight over it so we were fine.
Best of luck! Let me know if you have any more questions. Wish I had more info for ya! ~T.~