when I nursed, my baby would fall asleep so they wouldn't eat long.

Oh k it's ok for her to like 10 min our 15 min cause that how long she take on each breast

2 to 3 hours is typically the average. my 1 month old eats every 1-4 depending on the time of day. I recommend going off of the baby's cues of when they are hungry and not using a clock, however in young babies it's recommended to wake them if it's been more than 3 hrs and feed, otherwise ypur milk supply will take a hit.

Yea between feeding

Do u mean in between feedings or during a feeding?