For starters, stop taking weight loss advice from Dr. Oz. He can't be trusted, at all.
As for "perfectly", what does that mean, exactly? There is no room for perfection in a healthy lifestyle. 1200 calories may, in fact, not be enough for you if you're exercising.
I would suggest starting here for ideas on how to get the scale moving. www.sparkpeople.com/resource/fitness_artic