Judy,
I had to lose 30 lbs in a month , I made it to 20 and was okay. But the sooner you start the sooner you will have it done and over with. I did 2 slimfast drinks and a lean cuisene for dinner, for 2 weeks then I did 3 slim fast a day for 2 weeks. I am 21/2 weeks post op and I am still drinking and not eating. So far, I have lost 33 lbs. Do I think it is hard to do, oh yes, do I think it was worth it , you bet. I am looking forward to food on the 17th, but I haven't really missed it. Good luck to you.