Hi Linda, you can take much more of a break than 3 days. Some people do 3 days on and then take 7 days as a break. Whatever you need to do to cope a bit better.

But yes the dose itself maybe too high at this point as Dawn said. Andy recommends supplements when doing this because he believes not taking them is just making it far harder. His recommendations are vitamin C, vitamin B complex, milk thistle, magnesium (taken 3-4 times a day so they will be effective enough) and taking zinc, vitamin E, once or twice a day.
with this he recommends flaxseed oil (about 1-2 tablespoons a day, which can be mixed into yoghurt or cottage cheese etc). Also borage oil is a good one to take along with flaxseed.