If it isn't a constant and if you still only have it occasionally, its probably doing its job.
Don't mind me, i was on a several meds that never worked over that time peroid so i had it nonstop.
My diet is very restricted because of the Barrett's and I've tried coming off of the Nexium and have tried a few different PPI's and natural remedies but nothing works for me unfortunately. My GE is talking surgery for the large hernia but I'm not at all keen on that because the success rate is not that high and like you I don't tolerate sedation well at all. I'd rather stay on a PPI than risk my Barrett's progressing to cancer