Personally I prefer Dry Fasting for the reasons you mention, but I wouldn't recommend it for someone without some fasting experience. I am not sure about the "3=1" description. I prefer to think of dry fasting as different to water fasting.
I have no idea what doing a dry fast after a significant period of Water Fasting would do. I cannot think of anyone who might have done it and written it up.
You are well into it now. Stay where you are and we'll try to find out about the possibilities of going to a dry fast after a significant duration water fast.