I did rock my DS to sleep until he stopped sleeping in our room. When I moved him into his own room he was around 12 mnths and we had just moved into a bigger two bedroom house. I developed a new bed time pattern of dinner bath story and sleep. To be honest it was really easy and I wish we had done it sooner. I felt he was ready and that was that he just did it. At first i would sit there and pat him not making eye contact but it was only about 3 days before he didnt mind me just saying goodnight and just going to sleep.
So my overall feeling was he was just ready.