We used the Ferber method, it worked for us. Our ped recommended it. Our DS has been sleeping through the night since he was 4.5 months old. by that I mean at first he was sleeping from 10pm-6:30am, and as time went on, getting more and more sleep so now at 14.5 months, he sleeps from 7:30/8pm - 6:30/7:30am.
All people rouse some in the night, its natural. Adults easily go back to sleep. Children can too.
Once they are 12 lbs or 3 months old, they no longer need the night time feed.
BTW, don't be surpised if you find yourself waking up for your 3am playdate with your son as long as a week after you teach him how to sleep through the night. Your internal clock might not be used to the notion that you are allowed a full night of sleep.
Good luck to you and yours,
F. B.