Wedding in 56 DAYS!!!!!!

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My dress finally zips but it is still snug in my back and chest....I think I am going to try Jillians 30ds again and walk on the treadmill to help lose inches in my back and belly ( 5 months ago I did 30ds and walked 15-30 min on treadmill for 3 weeks and lost 9.5 inches total in those 3 weeks....Anyone else have any ideas? I would like to try to lose 10lbs in the next month before my final dress fitting....