Go back to sleep or feed in the middle of the night?

Hi all! I am a new mom, just trying to figure this whole sleeping through the night thing out. My 7 week old baby boy slept through the night two nights ago! Typically he wakes up around 3-4am. I can get him back to sleep easily just by putting in his pacifier, but then he wakes up every hour until around 6am, when he is too hungry to go back to sleep. My question for all you experienced moms.... should I get him back to sleep when he stirs at 3am or should I just feed him and put him back to bed? The waking up every hour is still exhausting. What is the best way to get him to sleep through the night?