Need breastfeeding tips

AN • will be having 2 babies about a year apart
I just got home from the hospital today with my 4 day old baby girl. She had to go to the nicu due to me having a fever after a terrible labor and delivery. Luckily she has been very healthy since! However, the nicu keeps the babies on tight schedules and that doesn't necessarily allow for great breastfeeding habits to begin. Now I have her home, I am pumping and trying to get her to latch... But no success. We give her what a pump+formula, but being that my milk hasn't 100% come in yet... It's mostly formula. I'm going to call for help tomorrow but was just wondering if I can get some mana advice. Thanks!!