To substantially reduce the amount of fat content of Buffalo milk, skim the cream off the boiled milk twice. Additionally, you must understand that a cup of milk has almost 1/3rd the amount of calories, your main meal is supposed to have. If on a weight loss diet, you can probably have half a cup with your breakfast. Alternatively, you can have more of curd and paneer, since they are good low fat dairy options. Also to further keep the calorie content in check, you can flavour the milk with cardamom or fennel instead of adding sugar to it.