Can smoking less still help with barett's esophagus if you are unable to quit cold turkey?

Sort of: Barrett's esophagus is generally caused by chronic reflux more than smoking, but smoking can help contribute to reflux. Smoking less of course is better than smoking more, and you should be congratulated for that. Of course, it'll be better the more you quit, until you are totally off. So take the triumph, and talk to your doc about ways to get the rest of the way.

Yes: Smoking, being overweight and a variety of other things (stress, some drugs, anxiety, acidic foods) may cause reflux which contributes to barrett's esophagus. The less you smoke, the less likely there is going to be more acid, but cessation is best. You don"t have to go cold turkey to quit - there are many techniques (acupuncture, hypnosis) and medications (nicotine patches, Chantix etc)&support.