feedings/sleep

My baby ate 4oz at 10pm and then went to sleep a little while after. He didn't wake up until I got up at 5am to wake him. He never goes this long without feeding again. Normally the longest he lets me sleep is 5 hours & 30 mins. He didn't even wake up to eat by himself until I woke him up. It's been 7 hours. He's 2 months old. Is this normal? I feel awful that I didn't wake up and get him up sooner. When I did get him to wake up he was screaming so much because he was starving. 💔