I have a 5 week old baby girl, I have started breastfeeding her from the day she was born, the sisters were giving LO formula as a top up. Since then I wasn't sure if I was producing enough milk, so I began taking a supplement. I drank about 2 litres of water and other liquids during the day, rest and ate. Baby was been taking my breast and drinking formula. Now her Feeds are both breast and formula. I know the benefits of breastmilk and want LO to only have it. Formula intake is at 100ml about 2 or 3oz. How can I get her to stop formula intakes, do I just leave it and feed BM exclusively, she also shakes her head from left to right looking for more food. Please help me, I don't know what to do as I'm a first time mom.