GERD/raising head of bed/rednecks

2 x 30 may not be too high in your case - what you read about was probably the standard 'starting' dose given to anyone who has some acid reflux, but there are instances in many conditions where an MD will prescribe more (or less) than the usual doses to either try to quickly stop something before it becomes a problem, or if the patient's relatively large and ditto the previous reason, or various other things, but don't forget he knows what he's doing and how much would be 'too much' for you short term, and I'd go with his opinion for now, though feel free to question it next time you see him, of course.