Day 5, I need help!!

help!! I am on day 5 and am starving and feeling very weak. I never felt this way doing The Master Cleanse and I am not sure if I am doing something wrong. I am drinking 3-4 cups fruit juice in the morning/fternoon and 3-4 of veggie juice in the afternoon/evening. I am also drinking at least 8 cups of water and drink a laxative tea at night and 2 cups salt water flush in the morning. any advice?