so your a die-hard (Bruce Willis type!!) coffee drinker!!
Coffee addiction is akin to tea-drinking addiction or even tobacco addiction, except it is caffeine and not nicotine.
Coffee and tea were (and are) considered by Natural Hygienists to be "poisons" and serve no purpose other than adding to toxemia: the exception being green tea while not fasting.
I hope you realize that the drinking of coffee during a water-fast means that while you are eliminating toxins, you will be adding to toxemia simultaneously.
This doesn't seem to be a very sensible way of going about it.
"Fasting makes it easy to overcome bad habits and addictions. Many people have overcome tobacco and alcohol addictions by fasting, and even drug addictions. Fasting rapidly dissipates the craving for nicotine, alcohol, CAFFEINE and other drugs".......Dr Ralph Cinque http://www.drcinque.com/facts.html
I certainly hope you do not continue drinking coffee while you are fasting.
In my experience, under an exclusive water-only-fast, the "taste" for everyday food and drink items just "disappears" as your body is cleansed. In fact, after about 4 to 6 days on a water-only-fast it becomes almost impossible for smokers to continue with their habit, as they say the taste becomes foul and repugnant.
The same can be said for caffeine-derived drinks.