Hi!
I just went through the same thing. My doctor was trying to decide if I was suffering from acid reflux, and he said do you drink coffee-- soda-- chocolate--advil? I was like that's 80% of my diet!
Anyway he asked me to cut out all the caffeine. It was really hard to become decaffeinated. I was VERY sick with headaches for about three days. And I LOVE my cokes!!!!! On Friday afternoons I treat myself to a fountain coke, but otherwise they're gone. I have added some coffee back in the morning, but not nearly as much as I used to drink. I often have decaf instant tea in a pinch. My intuition tells me that the caffeine can't be good for me, and I know the sugar isn't good for me, so I'm counting it as a blessing that the doctor asked me to cut back. You can do it, especially if you're a day or two in already!