Firstly that's brilliant we'll done.
I think you have to be prepared for it to slow down. I keep thinking mine will but it doesn't seem to be (not that I'm a stone away from goal like you) but it may not.
Good luck on your final part of your journey.
week one- 17 1/2 pounds week two- 4 1/2 lbs week three- no weigh in week four- 11 lbs week 5- 5 1/2 lbs week 6- 4 lbs week 7- 1 lb week 8- 10 lbs