Lose weight fast!

I am taking a trip to Florida in the middle of May. Is it possibly to lose 15pounds before then? A 900-1000 calorie a day work. I am 120 pounds. Trying to get back to the weight I've been for years which was 105...gained weight these past 6 months due to stress and lack of workouts( which I never thought I'd stopdoing, but stress got the best of me) Has anybody lost a well amount of weight in just a month. Tips?