Re: Moving from formula to breastmilk/breastfeeding?
Awesome, mama, congratulations on getting her to latch! That's a huge accomplishment. Others may have better advice for you, but for now check out this:
The more she can latch and bf the better, but you'll have to make sure she's still getting enough. With a fully bf baby, that's done by looking at outputs - a good number of wet & poopy diapers every day. I will have to look up the exact numbers for you for a baby under 6 weeks (unless someone else can post it first); after six weeks, exclusively bf babies should have at least 5-6 wet diapers per 24 hours, and they can poop anywhere from more than once a day to less than once a week and still be fine.
ETA: she'll also need to nurse a lot to increase your supply, so my gues is that she will still be needing some supplements. If you can pump and give milk instead of formula, that would help your supply ramp up appropriately much faster.
Nursing, pumping, cloth-diapering, babywearing, working professor mama with the awesomest SAHD ever.