I can’t remember exactly how long I had Gerd before my diagnosis, maybe 2 years? My doctor who did my colonoscopy also did my endoscopy. She diagnosed my Barretts, after a couple years the tissue from my esophagus connecting to my stomach was turning brown in color which was a sign it could turn to cancer. She had recommended me to a specialist for 4 RFA’s (radio frequency ablations) that basically does away with the brown tissue and kills it so pink new tissue can grow back. The RFA’s were spaced apart like 6mos apart if I remember correctly? So the new tissue could come back. Hopefully you can understand this stuff. Best of luck !!🙏