If your milk supply is low, there are a few foods that you can add to your diet to help increase it.
Oatmeal is said to increase milk supply. Oatmeal is extremely versatile, as it can be both sweet and savoury, hot and cold, and can even be put into a smoothie to make it extra creamy. Try making hot oats with bananas, nuts, and honey for a delicious and nutritious breakfast, or make-ahead oats by mixing oats, milk, and your desired mix-ins and eating them the day after.
Flax seeds are also said to help, because of their high omega content. They can be sprinkled onto oats, blended into smoothies, or even used as an egg replacement when mixed with water in baked goods.
Also make sure that you are drinking plenty of water. Water helps to support all of your body's functions, and if you aren't getting enough, your milk production will be low. Breastfeeding can also dehydrate you, so you may need more water than your normally would. Remember to stay hydrated throughout the day to ensure your body has the necessary resources to produce milk.