losing weight for breast reduction - please help stat heavy

hi I've been trying to lose weight for about 7 years now so that i can have a breast reduction on the NHS, I'm 255 lbs 5"8 and wear a 34K bra I'm quite a large build my stats are these :- hips 54" waist 42" chest 57" my wrist is 7" forearm 10" and my waist to hip is 0-77. apparently my body fat calculation is 28.56... my point is as i haven't lost any weight despite trying for the last 7 years I've now arranged to have this breast reduction privately and is booked in on the 19 sept 2013... I have decided for one last attempt and getting this weight off my goal is to lose 30 lb by surgery date - for the last 3 weeks I've been eating 900-1200 calories a day with a fast day in the week and a cheat day on Saturday I've been running - weightlifting and swimming 3 x a week for the last 5 weeks and before the drop in calories i was on the 5:2 diet where i was eating reasonably for 5 days and fasting for 2 days.... I have not lost a lb NOT ONE. and not dropped any inches either. needless to say I'm gutted and had a little cry into my dogs fur this morning!!! do I continue with what I'm doing with the understanding that it's science and the weight has to come off! or do I change my tactics? I need help any ideas anyone?

The 24 lb lost is from January 1st and I lost the first 20 lb in 6 weeks but nothing since