Trust your body to do this. Adding formula into it causes the problem you think you already have.
Right now your LO is going to be super fussy at the breast because you will not be producing enough milk for her...she needs to tell your body her needs and formula messes around with that.
The best thing you can do now is throw your formula away so your not tempted and just feed feed feed. Your body needs time to catch up and you LO needs to be at the breast to pass that message on.
My eldest was formula fed and the others EBF and once you get established and going its far easier and convenient to BF.
Persevere, it is worth it.
I would
NOT agree with this!!!!!
Dropping 12-15 oz worth of formula a day is far too much to drop at once. Please, PLEASE do not do that!
Kellymoms advice is WONDERFUL, and I know so many moms who've successfully went on to EBF following THAT advice. Cutting out so much formula right away can lead to weight loss, dehydration, not enough calorie intake ect and a world of other issues for your BF journey. I cannot stress any more how I feel you should not at all just throw out the formula. Just yet!!!!