Hello
I am the same, had lost 7 stone, 13 lbs since January 2012, only to put 9lbs over Christmas and now am struggling to lose it, I have tried success express, where 2/3 plate is superfree food which didn't really help. So, with my consultant, I have decided to "try" a week of fast forward, could you ask your consultant about it if nothing else is working for you?
Good luck x