Anyone else hit a pre-op diet brick wall?

I have been on the pre-op Optifast 800 shake diet for 2 weeks and I lost 15 lbs but in the past 5 days I have hit a brick wall and stopped losing. My surgery is only 3 days away and I  need to lose like another 10 lbs!! I know it's not going to happen but I would like to drop a couple more pounds before surgery. Has this happened to anyone else? Any suggestions?

Have you been exercising? There is no way to drop 10lbs in 3 days, but I'm sure you can get off a couple more lbs. Good luck on the up coming surgery.