In the normal course of breastfeeding most mothers start out with much more milk than the baby needs or can drink. And as you feed the baby your supply settles down to be just a little more than the baby drinks. It is more to help you cope with the frequent days and growth spurts the baby has.
This is clearly true for you if you are able to pump 8 oz (or even 6 oz) at one session. A one month (and in fact a six month) old baby needs about 750 mls or 28 ozs in every 24 hours. A baby who is only 3 weeks old should be feeding between 8 and 14 times in 24 hours.
If you can pump 6 oz eight times a day you will end up producing 48 oz in 24 hours instead of 28 oz. This will lead to an over supply and all the problems that go with oversupply.
In the case of twins the mothers don't produce twice as much as for a single baby but still the twins grow well. Remember the actual amount your baby drinks is NOT important. What is important is what the baby does with the milk she drinks. If she is growing well the amount is RIGHT - even if it is far less than a formula fed baby would drink.
Generally it is much better to feed the baby directly for the first six weeks. This allows your body to get the regular stimulation it requires and for the baby to regulate the amount of milk your body must produce.
It is also normal for your breast to stop feeling full as you continue to breastfeed. Usually you notice this lack of full feeling in the afternoons and evenings first. This is because you are better rested in the mornings ? not because the baby is drinking more in the evenings. Most mothers stop feeling full all the time by the time the baby is four months old.
Why are you supplementing with EBM? Usually the only reason to be doing so with a three week old baby is because the baby is unable to suck by herself. If this is the case please get help from a lactation consultant or LLL leader. (Lactation consultants are listed at
http://www.geobaby.com/directory/health-and-fitness/midwives/ and LLL Leaders at
http://www.lllhk.org)
If you are supplementing because the baby asks for more or is fussy after she has finished the feed then it would be easier and better to feed directly again. A baby asking for more milk is not a sign that you don?t have enough ? rather it is a sign that the baby changed her mind about wanting to eat. Please see the thread
http://www.geobaby.com/forum/thread120256-2.html post number #15
Also remember that breastfeeding shouldn?t hurt, especially by the time that baby is three weeks old. Please get help from a lactation consultant or an LLL Leader.
Best wishes,
SARAH