Hi LauraH. I asked the team that question and they said it was ok to stay on the 800 for a few extra weeks as long as I felt OK and had no problems, then to go to 5:2.
Some folk posting on here who have more weight to lose are planning to stay on the 800 longer term, some moving to 5:2 or a variation of it (2:5, 4:3, 6:1).
It was pointed out earlier that folk with a gastric band fitted are permanently on a severely restricted calorie count, and that seems ok, so why can’t we?
Hope that helps.