I want to loose weight. I don't want any dietary supplements or drinks.?

i want to loose 8 pounds, i am 5"7 and weigh 120. i tried out for a modeling agency and they told me i had to weigh 112 before they took me. i really really want this. its my dream. i dont eat any meat besides fish, and ill run about 2 miles everyday. any other specific snacks daily food plans, meals for me? please, i have to do this in a month an a half. thanks