CT to taper

So I mentioned before I went CT from 20 gpd for 4 days. Well the heat wave hit me at work digging and mixing concrete and the fatigue was pretty unbearable/unsafe (could be making excuses) but anyways I needed up getting some capsules and my plan has now become using only 5-6 gpd (less if I can get away with. Only taking what I need to work) and the stopping next weekend. My question is, how bad/long will the wd last or be coming off of 5 gpd? Surely not as bad at my 20gpd CT?