Baby sleeping longer stretches - does he need a bigger bottle?

Dani

Mamas who feed expressed milk; as your babies sleep longer, see they eating more at one feed when they wake up, or the same as always?

My little guy takes 3-4 oz every 2-3 hours during the day. He just did his first long stretch of 5.5 hours between feeds, and we gave him his usual 4oz. Should it have been more? He didn't seem fussy etc. afterwards.