Can a pregnant woman start on the TFR programme?

When you say can she have the shakes do you mean milk shakes because you do not have them on the TFR diet and she would need to speak to her doctor but if she is breastfeeding it is unlikely the doctor will allow her to do this programme because she will need to eat a healthy balanced diet when breastfeeding and the TFR program doesn't allow carbohydrates which she will need for the nutrients for baby to get from her milk. She hasn't had baby yet so why is she thinking about weight loss, she might not have any weight to lose after the birth. This diet is a very long and expensive diet and when the weight is lost you have to gradually bring the foods you have not ate back into your diet and if she had stuck to the exact diet her glycerin levels will be low and when she starts eating carbs again she will gain around 7lb but this is because of fluid gain so does all this sound as though it would be healthy for her while breastfeeding?