How long did the CIO take?

Rebecca

My son was a great sleeper, but I am afraid with teething and things we have gotten into some bad habits of waking in the middle of the night and needed mommy to go back to sleep. For example, he nurses for long time before going to bed, but has been waking up between 11 and 12. He does not nurse then, but needs me to rock him to go back to sleep. I do not like hearing him cry, but I am contemplating working on letting him learn to self sooth. If you have done this, what was the longest your little one cried before falling asleep? How many nights did it take before it got better? I am trying to mentally prepare myself. Any other suggestions for helping get past the 11/12 wake up, other than letting him cry??