8 week old trying to sleep 6-7 hours straight at night.

Jennifer
My 8 week old baby is trying to sleep 6-7 hours a night. During the day he eats 3oz every 3-4 hours. At night it's the same thing until a couple days ago he started sleeping 6 hours plus. Should I be concerned? Also he doesn't have much wet diapers at night even if he's eating 3-4 hours.