06/25/2023
Something parents are told when their baby isn't gaining weight well, is to make sure the baby stays on the same breast for a long time. Also, to put baby back on the same breast for the next feed (or several).
Unfortunately, this actually has the opposite effect from what we're after. I'll explain.
Babies are driven by milk flow.
When milk is flowing well, and they're latched effectively, they feed much more enthusiastically and actively. This is when they take in the most milk. You can often see or hear it, and when it's going well they swallow with every 1 to 2 sucks.
When the flow subsides, as it naturally does, they don't take as much volume of milk and tend to feed less effectively. This is especially true in a baby that isn't gaining weight well who are often seen doing a larger amount of sucks between swallows than expected.
To leave them on at this point in the hope of getting some higher fat milk doesn't make sense.(Especially as the milk at this point may not even be higher in fat, more on that another time)
It is much more effective to switch breasts and get another good flow of milk to stimulate the baby into drinking well.
They will take far more milk on board, and far more fat quantity than if they'd be left only having a very occasional swallow.
For similar reasons, it's important not to keep going back to the same breast if/when the baby wakes for a further feed. But also, because this leaves the second breast unstimulated and actually sends the message to your body to reduce milk production. The very last thing we want for a baby that isn't gaining well.
It is overall volume of milk that determines weight gain. We should be watching for, and encouraging the baby to actively drink, to maximise the amount of milk taken and stimulate milk supply.
Effective latch, breast compressions, and switching sides are really useful.