They'll let you go home much sooner than ours will then - ours you had to prove you could function fully without the NG tube in. No ifs, no buts - we own your baby as long as that tube's in its nostril - deal with it (can you tell this still hurts now?!)
I'll be honest - I was in a similar position, desperately trying to get her to breastfeed, expressing to get her fed through the tube, and her just being so small (and probably my norks being so big didn't help when dealing with a tiny mouth) and just getting none of it - the constant interruptions of Bounty women, evil transitional care woman who'd just walk in with no warning, free-range toddlers pulling cubicle curtains back and the like didn't help - despite her best efforts she just couldn't do it, and the hospital stay was absolutely utterly destroying me (I'd been shoved in the middle of a normal maternity ward bay, handed a green folder with the feed amounts on and left to get on with it) to the point where I was just a walking shell, considering putting her into care just to get off that ward (there was no provision other than shoving the babies in a room beside the nurses' station and listening if they screamed to care for them if mothers needed to leave the ward - and I wasn't prepared to do that with her so I was essentially a prisoner) - and I feel dreadful admitting the care thing - first time I ever have.
In the end, I felt like I was never ever going to be allowed to leave if I carried on trying to breastfeed - and I caved in and asked for a bottle and fed her expressed milk that way - and she took half a feed and I sobbed from feeling like I'd finally made some headway into getting the pair of us out of there... expressed for as long as I could (made it to 1 month - was trying to keep my supply going in the hope it would suddenly click for her as she matured and she'd become able to feed) but I still feel I sold her out for my escape from that hell-hole really... she still wasn't able to maintain a latch for more than a couple of sucks by the time my supply dried up at around 37 weeks and it's only now that she'd be 3 weeks adjusted that she shows any sign of moving toward the breast (and I cry every time she does as it rubs salt into the wound).
Probably none of this makes sense - she was born at a late 33 weeks - had a hospital stay of 14 days and someone off the record told me I'd be looking at double or triple that to be able to go home breastfeeding... yes I let her down and took the "easy" choice - but they'd have been taking me out of there in a body bag because I would have killed myself to escape that place by the end of it with what they did to me in there.