Since you mention that you pump, then I'm assuming your daughter is already familiar with drinking from a bottle? Because if she's never been bottle fed than you have two items that need addressing -- first, getting her used to a bottle, then getting her to drink formula. I don't recommend doing both at once because most kids balk at too much change too soon.
But if she is already familar with the bottle, then to switch her to formula I found the best method to be mixing breastmilk w/formula. The first 4-5 days the mixture should be 3/4 breastmilk and 1/4 formula. Once she has accepted that willingly, then go 1/2 and 1/2, etc. This allows her to get used to the different taste of formula, and also allows her digestive system to adjust as well. If all goes well, in about 3 weeks she should be all set! And then you get to do it all over again when she turns 1 and can start drinking whole milk.
If your daughter hasn't been bottle fed before, then I suggest first getting her used to drinking 100% breastmilk from a bottle, then follow the above instructions.
My personal experience is that I wasn't able to produce enough milk for one feeding once I switched to formula. My body seemed to need to be doing at least 3-4 feedings to sustain milk production.