I thought I was doing really well today, I've had 1 weetabik with milk for breakfast, a tin of sardines and salad for lunch and a 2 egg ommelette with salad for tea...I've just counted my calories and I've only had about 600 calories today for the whole day, great? well I've just been told that I'm going too far and my body won't lose weight as it will go into starvation mode and start to store fat??? is this true??