How do i stop my addiction to caffeine safely while breastfeeding with little to no side effects?

Stopping Caffeine: There is no danger in just stopping caffeine. One does not seize or have other medical problems with withdrawal like other addictive substances. There is a common headache that occurs during the caffeine withdrawal but that is in now way dangerous or 'unsafe'.

Cut back slowly: If you drink 5 cups a day, cut it down to 4 cups a day per week than 3 cups a day for a week then 2 cups a day for a week then one cup a day for a week. Basically you cut it down by one cup per day for a whole week before you lower it further. This will hopefully cut down on any chance of you having caffeine withdrawal headaches. Best wishes.