When Melody was around two month's old, we decided to let her attempt sleeping through the night.  My best friend had just started attempting it with her two month old, and we were basically having to wake Melody up for her 2 a.m. feeding.  Her schedule did not change at all from her one month schedule except we removed the 2 a.m. feeding.  When we first started this transition, Melody would start stirring between 2 and 3 a.m.  I would give her her pacifier and see if that would put her back to sleep.  If it did, I would also go back to sleep.  If it did not work, I would get up and give her a bottle.  It took about a week or two, but eventually she started just sleeping through that time frame altogether.  Now she will not start stirring until around 4:30 at earliest.  Below is the schedule: