My surgery is in April and I had my last diet coke on Saturday:) It took 6 weeks but I slowly weaned myself off of it. This addiction no joke worried me more than the actual surgery! This has been a 20 year addiction. Since I did it slowly, I haven't had any headaches and I am now drinking one hot tea per day to get a little caffeine. I have also treated myself to a few drinks like Propel, which I don't typically splurge on.
You can do it and you are smart to start now! One thing I did in the beginning was to stop buying 2 liter bottles. That way I knew exactly how many DC's I was having each day.
Good luck!:thumbup: