Breast milk

Amber

How do I produce more milk? I've lost almost an ounce of breast milk from each breast. I was producing 5-6 ounces of milk now I'm only producing 4 ounces. How do I produce more? And also how should I store it? What is more reasonable? Freezer, refrigerator, or deep freezer? When I store I plan on using it within the next week.