what to do🤔

4 days ago I gave birth (finally😩🎉) as soon as I gave birth I offered my daughter the breast which she kind of sort of took🤔but throughout the entire hospital stay, up to this point I've been formula feeding. On two separate occasions I manually pumped  then poured the milk into bottles. When I offered it to the baby she sucked a couple of times then looked at me like wtf😩I'd like to do both formula and breast milk, would like to know if there is a certain method to use when introducing breast milk to a formula fed baby?