August 5th is 9 weeks from now, so lets do the math. The safest amount of weight to lose would be 2-3 pounds every week, so if we calculate 9 (weeks till August 5th) and multiply that by 2 (pounds lost per week) would be 18 pounds lost during that period, or if you do 9*3 = 27 pounds lost. It would take about 2-3 extra weeks to lose 45 pounds, make it 9*4 = 36 or 9*5 = 45. But, remember that losing the safer way is the healthier way and be sure to eat lots of healthy food and cut the junk. Good Luck!