There is no rule saying you have to eat rye crackers...drop those, although they sure can be yummy...ggg. It is more important to get the Oj than broth and soup part in and then gradually add more healthy choices to your diet. A 10 day cleanse will be easier of course than a 20 plus day cleanse. Many have broken on apple juice and even watermelon. But like Detour said, thousands have done fine following the program so it has a great track record.
It is recommended that you wait until normal digestion and elimination return before doing a liver flush. You will want to feel good too. This can take a week or two. In between, begin adding plant oils, like olive oil, to your diet to encourage the formation of bile.