Aim to spend 15 to 20 minutes hooked up to the pump to net a good amount of breast milk (some women will need 30 minutes or more with the pump, especially in the early days). Pump until the milk starts slowing down and your breasts feel well-drained. Be sure to clean the breast flanges after every use.
If the breasts do not get emptied completely or often enough, the body begins to produce less milk. Some mothers say the milk never stops flowing while they pump. Typically, you should not pump longer than 30 minutes, even if the milk is still flowing.
Generally, moms should be pumping every 3 hours. Pumping more often can help stimulate breasts to produce more milk. Moms can try pumping both breasts for 15 minutes every two hours for 48-72 hours. Then moms can return to their normal pumping routine. Pumping for longer than 30 minutes may not be beneficial.
Pump every three hours around the clock or at least eight times in 24 hours until you build a good milk supply. Some moms find it helpful to set an alarm on their phone to remind them it is time to pump. Pumping usually takes 15 to 20 minutes.
“The standard advice is to pump for 15-20 minutes. Even if you don't have milk flowing that entire time, you need to pump that long to get enough nipple stimulation. Also pumping at least 5 minutes after your milk stops flowing will tell your body that you need more milk; thus increasing your supply.
The 120 minute rule is that, generally speaking, when you are exclusively pumping, you want to spend at least 120 minutes (2 hours) per day pumping. How many sessions you would spread that 120 minutes across depends on how old your baby is. With a newborn baby, you might want to do eight 15 minute sessions.
Ultimately, if your baby has reached its birth weight and you're pumping enough milk during the day, it's okay to sleep eight hours without pumping at night. Keep in mind there is an adjustment period for your body as it begins to acclimate to the decrease in overnight milk removal.
While the exact time that prolactin levels peak seems to differ from person to person, it most often occurs somewhere between 11 pm and 7 am. High prolactin levels at these times could lead to higher levels of milk production at these times.
Your healthcare provider would likely recommend that you continue to pump until your baby is able to breastfeed effectively and once you have a sufficient milk supply. Once this has happened, they will likely advise you to stop pumping and just breastfeed - and, of course, get plenty of rest in between.
Despite views to the contrary, breasts are never truly empty. Milk is actually produced nonstop—before, during, and after feedings—so there's no need to wait between feedings for your breasts to refill.
Something I recommend to moms is the 5-5-5 rule. Try and use milk within five hours at room temperature, five days in the fridge, and by five months in the freezer.
Pumping milk burns the same amount of calories that nursing burns. Pumping milk burns anywhere from 200 to 600 calories per day. This will also vary from mother to mother, pumping session to pumping session, and the number of pumping sessions per day.
During the early stages of exclusively pumping, avoid going more than 5-6 hours between sessions. While it can get exhausting, pumping 1-2 times per night will ensure that you have a sufficient milk supply for your baby. If you're a working mom, aim to pump every 3-4 hours per 8 hour work period.
Pumping Positions
You don't want poor posture during breast pumping because it may lead to irritation. Instead, sit or stand upright with your shoulders open, back straight, feet flat on the floor and arms supported. Try a pillow or armrest to help hold your bottles or milk catcher steady while pumping.
Breastfeeding or offering formula in a bottle are not the only ways to feed your baby. Moms can decide to exclusively pump and give their baby all the benefits of breastmilk without having to nurse.
If You Miss a Night Pumping Session
If you accidentally miss a pumping session now and then, there is no need to fret, as it most likely will not harm your supply — especially if you can squeeze in another session at a different time of the day.
During this time, before you letdown, you might see milk dribbling out your nipple, and just a few drops going into the bottles. When you have a letdown, you will see milk start to spray into the flange and flow more quickly into your bottles.
If your baby wants to breastfeed right after breast pumping, let them! Some babies are patient and will just feed longer to get the milk they need.
Sleep experts agree that adults need 7-9 hours of sleep per night to function properly. Newborns, however, sleep about 16-20 hours in a 24-hour cycle, but this sleep is disrupted with waking every 20 minutes to few hours - making it virtually impossible for a new mother to get those 7-9 hours of uninterrupted sleep.
Milk supply usually reaches its peak around four weeks after birth, with most of the increase happening in the first two weeks. If not enough milk is removed during this time, your breasts may end up making less milk than your baby needs.
There's a fairly easy fix, of course. Mothers can label their milk with the time it was pumped and coordinate infant feedings to offer morning milk in the morning, afternoon milk in the afternoon and night milk at night.
While breastfeeding burns about 500-700 calories extra per day to fuel milk making, this may not always contribute to weight loss postpartum – many factors like pre-pregnancy weight, diet, physical activity level, etc will impact weight loss after birth (Institute of Medicine, 2002; Dewey, 1994).
You're not getting let down. If your breasts feel like they're full but you're not able to get the milk flowing out when you pump, it could be that you're not achieving let down. The let down reflex releases your milk from the milk ducts. This only occurs when you're either breastfeeding or pumping.
Do I need to pump in the middle of the night? Most women do not need to pump during the period of time that their baby is sleeping at night. However, some women may find that long stretches without breastfeeding or pumping can result in a lower milk supply.