it is up to you, but if you cut your points so drastically now you might find it harder to lose long term, so it's a toss up between short term loss's v long term sustainable loss's and as someone who has pretty much yo yo'd most of my life I would personally stick to your points but perhaps up your activity points by doing exercise.
Also, you might have stayed the same this week and have a really big loss next week. I would personally give it a couple of weeks to see if it levels itself out and then if your still not losing talk to your leader to see if you can cut points or anything else you can do to get your weight loss started again.