How storing excess breast milk helps mums handle supply dips
By Winnie Waweru, July 28, 2025For many new mothers, the early days after childbirth are a time of mixed emotions, joy, exhaustion, and for some, confusion about breastfeeding.
Interestingly, it is quite common for the body to produce an abundant milk supply shortly after delivery, often more than the baby can consume.
This natural overproduction, known as the milk “let-down,” can result in much of the milk going to waste if not properly stored.
However, months down the line, when the baby’s appetite increases significantly, some mothers face the opposite challenge, a drop in milk production that fails to meet demand.
This mismatch can create unnecessary stress and even lead to early reliance on formula.
But the good news is, there’s a smart and practical solution to this problem: breast milk expression and freezing.
Pumping excess milk during the early weeks and storing it correctly for future use allows mothers to build a reliable milk reserve.
This approach not only ensures that the baby will continue receiving the benefits of breast milk even when supply fluctuates but also gives mothers more flexibility and peace of mind.
When done properly, expressed breast milk can be safely stored in a freezer for up to six months, and in some cases, up to seven or even eight months in a deep freezer at constant low temperatures.
To get started, mothers should use a clean, high-quality breast pump, either manual or electric, and express milk ideally after a feeding session when the baby has had their fill.
Milk should be stored in sterilised containers or specialised breast milk storage bags, each labelled with the date and time of expression to ensure proper rotation.
Once pumped, fresh milk can remain at room temperature for up to 4 hours, in the fridge for up to 4 days, and in the freezer for up to 6 months, though using it within 3–4 months is best for optimal nutrition.
To thaw frozen milk, it is safest to place the container in the refrigerator overnight or run it under warm water.
It should never be microwaved, as this destroys vital nutrients and can create dangerous hot spots.
Ultimately, breast milk pumping and storage can empower mothers to maintain an adequate milk supply throughout their breastfeeding journey.