motherweary, You may want to just continue what you are doing for him now, rather than having him try to fast for right now. If his diet has been that bad for that long, the detoxification for him on a fast could be very painful. Maybe you could keep having him eat better, adding more and more raw fruits and vegetables to his meals, and slowly decreasing the garbage he eats. Then later after he has completely changed the way he eats, then start fasting a day at a time and build up to longer fasts? I just thought I would offer this for consideration.