First I've read that drinking lots of water will actually decrease your milk production. So stop drinking so much! This is what I did whenever I wanter a higher milk supply. Take oatmeal flakes and cook them in water with pineapple, passion fruit or the fruit of your choice. Add some cinnamon, ground cloves, brown sugar. Cook until flakes are soft. Mix it altogether in a blender and sift it. If its too thick add some water. Let me know how it goes.