calories too low?

I run at a 1,000 calorie deficit and try to keep my calories 50% protein, 30% carbs, and 20% fat. The reason that I keep such a high protein number is so I wont lose very much muscle, which you will loose muscle on a calorie deficit, but I've managed to only loose about 4 lbs of muscle. I've lost 45 lbs total since Jan. and get in about 8-10 workouts a week and try to rest one day a week. I suggest you give it more time than two weeks, and try to increase your cardio. Also, I suggest you get a body fat caliper if you don't already have one so you can more accurately track your body fat % and change your diet when you get closer to your goal body fat %. But MOST importantly talk to your doctor about what you are doing, how many calories you plan on eating, what vitamins and supplements you might use, everything, and follow your doctors advice, but go to him/her with a plan of action so they know you are serious about your efforts. Feel free to add me, I keep my daily eating habits open for those who want to see. It makes me feel even more accountable for what I eat.