Mixed feeding

Mixed feeding means giving bub both breast milk and formula. It is the usual word for combining the two.

It is not a halfway failure and it is not a single fixed arrangement. It is simply both, in whatever proportion a family ends up with.

There is one mechanism worth understanding, and it is the only reason this entry needs more than a sentence. The more formula bub takes, the less milk the breasts make. Supply responds to demand. So mixed feeding works well for some families over many months, and others find it harder to keep supply up.
That mechanism is why the order matters. Breastfeed from both sides before offering a formula top-up. The breast first, then the top-up, not the other way around.
Breast milk and formula do not go in the same bottle. If bub is having both, offer breast milk first, then formula if it is needed.
Whose decision this is. Not Dadda's. What he can do is know how it works. Then when it comes up, he is not the person repeating something he read on the internet.

From a midwife or a child health nurse, usually in the first fortnight. Usually in a conversation that already has a lot going on in it.

Also in this app. The feed tile in Dadda's Log asks what kind of feed it was. A family who is mixed feeding will use more than one answer.

Formula feeding. Formula feeding is formula only. Mixed feeding is both.
Expressed breast milk in a bottle. A bottle of expressed breast milk is still breast feeding — it is breast milk. Mixed feeding means formula is in the picture too.
Weaning. Mixed feeding is not a stage on the way to stopping. Plenty of families do it for months and carry on.