Mj has been trying to drop her sleep for a while now...
We take it as it comes each day, honestly i was thinking about leaving it about a year ago, so we decided that she would have 'quiet time' on her bed, curtains drawn etc, we would have a story and i would put on a CD and told her she could come out when it was finished (it ran for about a hour) and that she didnt have to sleep.
this went on for a week and then she started sleeping again... its has been on and off since. If we have things on, she always misses the sleep, but generally i try and get her to sleep every second day. She didnt sleep Friday, Saturday or Sunday and SOOOOOOOOO needed it today, she was at CC today and i spoke to her careers as she normally doesnt sleep there and they offered to sit with her to help her sleep, which she did.
She is almost 3 and 1/2, Im not sure how long she will still need them several times a week, but she doesnt need them each day now if that makes sense.

hope this helps