Its recommended to consume 1-2 cookies per day
We would like to add that the most effective way to get a good milk supply going and then keep it up is to breastfeed often. The more milk that is removed from your breasts (and the more often), the more milk you will make. The less milk that is removed, the less milk you will make. This is known as the supply and demand basis of breastfeeding.
If you have a low supply, then the first thing to do is to get help to find out why. Then take steps to improve how you are breastfeeding and/or expressing. Adding a galactagogue may then help to speed up the process.
If you are concerned about your milk supply, you may find it helpful to speak to one of the trained breastfeeding counsellors on the Breastfeeding Helpline.