NICU stay

My due date was August 27th but because of severe preeclampsia my baby was delivered via C Section July 23rd at 35 weeks. She came out 3lb 4oz, breathing on her own, her only issue is that she won’t take a bottle or breastfeed so she is being fed thru a tube in her nose and has to stay in the NICU until she can eat on her own. Any moms have any experience with this & know roughly how long she should have to stay? I know that every baby is different but I just want my baby home so it would help to have any input.