How much expressed milk should my 1 week old eat in a day?
I have newborn twin girls. One has learned to breastfeed just fine and after losing too much weight initially, is on the right track now. The other has continued to lose weight. She's not dehydrated and has no other ill effects, but we're afraid that will change if this continues. We're still working on getting her to breastfeed well, but since it takes so long per attempt and we have a second baby feeding very frequently, it is very difficult to even offer the breast enough for her to take in enough calories. We started supplementing with a handfeeder for expressed milk and that seems to be effective. Plus, Mommy can sleep while baby suckles off Daddy's finger, which is nice.
So now we are looking at either a handfeeder or possibly a bottle to supplement or replace the breast for one baby using expressed milk. But we're trying to figure out if my wife can express enough milk for the job and to assess whether or not our daughter is eating enough food to start gaining weight. We have the Ameda Purely Yours, which should be plenty as a supplement, but we might need to rent a medical grade pump if we're not getting enough milk expressed as is.
We're hoping to avoid using formula, since it is not as good for the baby, but if she doesn't gain weight today, we'll have to just for the calories. To figure that out, it would be really helpful to know how many ounces (or milliliters) she should be eating in a day.
She was born at 6 pounds at birth and is now between 5 lb 2 oz and 5 lb 5 oz, depending on the scale and when she is weighed.
Apparently, the answer is 2.5 oz per lb per day or 150 ml per kg per day, if you prefer metric. I found both formulas on another website and confirmed with my doctor that they are correct.
Using a finger feeder to supplement the breast, it looks like we're now able to get enough calories into my little girl to get her gaining weight without resorting to formula. (I know about the problems with formula, but at a certain point it is better than a dehydrated baby; fortunately we didn't get to that point.) Plus, I get to feed sometimes, which is nice.