I breastfed all mine, including twins. It was always ready when they needed it.
I had a rough start with my first, which was strictly inexperience.
Initially I wasn’t producing enough milk, but that was because I didn’t start out right, feeding her as often as I could.
And with her, I could have fed twins. I had lots of left over milk to freeze.
With my son, he ate like twins, so he was fine.