Suggestions to break through a plateau?

Ive been eating healthy and exersizing for about 2 months now, the first few weeks were great (as they usually are) and I know some decline in weight loss is normal but I am finding it very difficult to loose anything now. I eat healthy, about 1200 cals a day, pretty much all fresh fruits, veggies, whole grains, beans and eggs (Im a vegetarian), drink a ton of water and work out 5-6 days a week for 60-90 mins a day doing a mix of cardio and strength training. This month I have only lost about 1.5lbs. I feel like I'm doing everything I should be but I am just not seeing the results I'd like. I would like to loose about another 17lbs. Any suggestions for kick starting my weight loss again?