My DD2 has just stopped doing that, roughly around the time she turned 4. I used that birthday as a milestone and it seems to have worked, ie: when you turn 4 you won't need to go in the pram any more. When you turn 4 you're old enough to sleep in your own bed. When you turn 4 you are going to kinder! So far all is working well. She only comes into bed if she's had a bad dream, or is particularly restless. So down to about 1 night a week. This a major victory after 4 years of co-sleeping non-stop. I thought I'd miss her little kicking feet - but happily, I don't! Now for the first time in almost five years, I'm getting uninterrupted sleep most nights. Touch wood. I feel like I'm jinxing myself by typing this, she only turned 4 about 8 weeks ago!