Jo's right, Louise. It's definitely worth doing it by the book, slowly re-introducing a much wider variety and, of course, carbs. If you don't do this, you'll be back to square one plus a whole lot more on top.
Yes to the weekly PP day, but you also need to re-introduce to your other PV days the daily extras, such as about 40g of bread, 40g of cheese, an allowed pieces of fruit. Then you need to have 1 gala meal and 1 carb meal (on different days) each week for the first half of Conso, then twice weekly for the second half of the Conso phase.
It's well worth thoroughly re-reading the section of the book on Conso in order to get into the right state of mind and learn which carbs, cheese, fruit and bread to eat.