Give him an extra pillow to help elevate his head and shoulders, and make sure he doesn't lay down for the night, too soon after eating. Give that food time to travel further down!
I have reflux at times, and it's mostly associated with laying down too soon after eating. It chokes me to the point where I can't breath, and I bolt upright wheezing and gasping for air, much like someone who is having a severe asthma attack, I would imagine. It's pretty darn frightening, not being able to get any air into your lungs. Recently my son has started having the same thing too, but he is bad about eating late and then laying down.
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