Unfortunately yes, same thing happened with my DD.

Perhaps you'll be lucky like me and by 8 weeks she was starting to sleep through the night (well anywhere from 6 to 9 hours) now at 4 mths she sleeps 12 hrs. So keep doing what you're doing, your little boy should let you have more sleep soon and he will get quicker at falling back to sleep after a feed at night. (During the day a different story)