I'm 17 (18 in December) 5Ƌ-5཯/2 and 109-110Ibs. My measurements are 32, 23.5,34. I would also like to go down to 100-105 Ibs. Is there any way i can change my diet (I eat a lot of meat vegetables and fruits, I've lost about 7 Ibs in 3 months and I save junk food for the weekends).

According to your height your ideal weight range is 113-138 lbs. So you look perfectly fine with this weight. Moreover your figure also seems to be most perfect as desired by many ladies. You are one of the luck ones to have such a fine figure and weight.
But if at all you want to lower your weight then carry out physical exercises as much as you can. The only point here is to remain consistent and motivated. Read ' Losing Weight The Intelligent Way ' in the link below. Good Luck