I am 9 weeks post op revision from band to RNY. I have lost 36 lbs. My dr says revision loss is different for everyone. I had a horrible band experience last year after having the band for 4 years, with my lowest weight at 79 lbs...yes SEVENTY NINE! I gained over 100 pounds after unbanding over the past year, 60 pounds gained 1 month post unbanding. So my band removal and revision 9 weeks ago had me at a surgery day weight of 211 lbs. current weight 174. Just stick to dr orders all will be fine.