You're starving yourself. I guarantee your body rejects 1500 calories daily, and you don't go anywhere. It's the classic eat less, exercise more recipe that never works. The people that lose weight long term actually EAT. You won't lose weight by being malnourished. No resistance training? Only cardio?
Why coffee? Not the best choice in my opinion because it create a massive stress response for hours in the body. Never will a good diet plan include a cup of coffee nor lipo 6. I'm in SoCal if you want professional dietary and fitness/wellness info.