I am a lazy mother.

Once boobs were out the window I used to make up gallons of formula (soya, she can't do dairy at all) and stick it in the fridge.
I trained her to drink it at room temp from an egg cup, something the midwife suggested for babies that don't like bottles. She used to lap at the egg cup like a little cat.
Egg cups are easy to sterilise.

I'm now having visions of putting my boobs out the window.
Oh look, the postman's coming!