Providing he's having plenty of wet nappies and is alert (when awake) and happy, then I wouldn't worry too much.
He could be just setting a new feed/sleep pattern. Emily is now sleeping 12 hours overnight without a feed. Last feed 7pm, wakes at 7am. And feeds roughly every 3 hours during the day, which is about 5 feeds in total.
So sounds pretty normal to me.