Tips for latching

Alison
I needs some ideas or tips to get my baby to latch . She's 3 days old . I'm wondering if using a nipple shield would help . She fights latching even tho she's hungry . Also is using a paci a bad idea when trying to bf ? My daughter is 3 days old . Sometimes she'll go 4-5 hours with out eating and it makes me worried . Any help would be great . Also this is our first night home .