premie not latching without nipple shield

Hi FTM here. i had my baby at 36 weeks, 5 days ago. she isn't wanting to suck without a nipple shield. i think my nipples are to wide and short. she also falls asleep instantly and can't keep her awake during nursing. she ends up feeding more often but not eating much i feel like . i started pumping to not loose milk supply. any tips to get her to take the real thing. she gets mad and fights if i try it without the shield. another issue is i have large breasts and its hard to get the right angle, even in football hold. thank you!