Help! Breastfeeding Not Going Well

She takes over an HOUR just to nurse. Over an hour per session. No, she doess NOT Have a tongue tie, she's already been checked for one. Yes she has a strong latch and good suck and my flow is fine. But she practically bites me when she is very hungry and it's painful and also she ALWAYS acts like she's hungry only minutes after I've nursed her for an hour. What am I doing wrong?! I feel like giving up.....this has been going on for over a month now 😭😭😭