Question about night feeding, thanks!

Ree

Hi everyone, just want to ask is it too long for a 9wk old baby sleep for 7 hours without a feeding? My LO is usually fed at 8.30pm and falls asleep at 9. Yesterday he didn't wake up as usual at around 1 or 2am. I waited and fed him at 3 at last as I was worried he would be hungry. I read that if a baby has enough feeding during the day, he can be without feeding during the night. Is it true? Thanks in advance.