I also was diagnosed with Barretts about 8 years ago. I went for the camera down the throat crap each year. Two years ago or so I was told I didn't have it any longer.
I've questioned other doctors about this and they all agreed that it can "go away".
Dunno what I did if anything to help this but apparently it can cure itself. Or I was misdiagnosed.
I still drink, but only to excess, and I still chew snuff. Perhaps that's the secret....lol.