I got the double the dosage recommendation too a year or so ago, though it seems to have mostly worked for me. Possibly see if you can try a different PPI (Prevacid, Nexium, Aciphex, Protonix, etc.) to see if the side effects are less? Alternatively, maybe change the time of day you take it to see if effects can be maximized at night?

(Edit: to be clear, in my case "double the dosage" was "take it twice a day", not take two pills once a day. I don't know which your PCP recommended.)