5month old formula feeding

How much does your 5 month old eat and how often? My little guy is drinking 6oz every 2.5-4hrs, never exceeds 30 ounces a day… does this seem like a lot? I don’t want to not feed him if he’s hungry..

He does go down at 7/7:30pm and sleeps until 7am with no nighttime feeds, he’s been sleeping through the night since 3months which was discussed and okay’d by his doctor.