Baby is 8wks & still nurses for an hour+ every 2hrs and rarely 3hrs. When did u notice a change in your baby?

I read that some babies are slow eaters and in the early months all babies eat often but will eventually start spacing out feedings and taking less time to drain the . My baby is 8wks now and still spends a full hour feeding and still eats every 2hrs. Once in the early morning she'll go 3hrs. When did you start seeing change in your baby? Some women say their babies eat 15min on one side and 15min on the other side! I want that!