Is 1200 calories per day too little?

You seem to be having a fairly balanced diet and if you reduce your calorie intake anymore your body will hold onto its fat stores as it will think it is starving. You need to consider the whole package though not just the diet. As you lose weight you don't always lose it from where you want. May be a change in exercise from the gym to maybe swimming and dancing will help and tone different parts of the body. Don't be too hard on yourself you are doing well and still have four months to go. Check your BMI you may be at your ideal weight. It should be between 20 and 25. Good luck and I am sure you will look beautiful on your special day