Do I have to follow the South Beach Diet meal plan exactly? Or can I repeat meals during the week?

Or can I just make say 2 of each type of meal & then repeat it through out the week.
Making each meal exactly as it is listed for 14 days would make a really long grocery list and I want to save some money by making say 3 portions of one recipe and repeating it during the week.
Any comments and info welcome. Thanks.