My boy can sleep through the night when he was 2.5 month. We train him intentionally and follow the advice from books.
1st have to make sure he's not hungry, like some mama has mentioned, have night feed / dream feed (feed when he's sleeping) before you go to bed. Or you could feed longer (duration), in the day.
Having done the 1st step, you should not try to feed him when he's awake at night. Just try to comfort him / use pacifier and make him go to bed again / his own fingers (when he knows how to suck to comfort himself). He will get used to it and you will have excellent sleep which is vital especially if you need to work.