I just switched my two year old to a toddler bed. We have a baby gate on her bedroom door (so she doesn't sneak out in the middle of the night as a safety measure) We do our bedtime routine, put her to bed, give hugs and kissed, say goodnight, and leave the room. Every time she gets out of bed to stand at the door and yell for us or cry, we would ignore her for 5 minutes, then go in there without talking to her, place her back in bed, tuck her in and leave. For a few nights, it takes a long time, but they eventually go to sleep. They get the hint after a few days that you are not going to give in. I thought it wouldn't work, but it did! :) Good luck!
at 10:10 PM on Mar. 28, 2011