3 year olds waking up multiple times at night

[sept2008twingirls]

About 3 weeks ago I transitioned my twin 3.5 year old girls to sleep in their own twin beds.  Before that I was co-sleeping with them plus their 5 year old brother when they waked up at night-moving into their bed.  I've moved the 5 year old into his own room and he is now sleeping through the night.  The 3 year olds on the other hand are waking up between 3-4 times each!  One twin has slept a few times through the night, but the other one always wakes up and calls me.  I sit with her for about a minute and then she goes back to sleep.  I'm assuming it's habit, but how do I break that habit?  I nursed them for 2.5 years, so that was how they went to sleep before.  Now they go to sleep with me holding their hand at night, sitting next to them.  They sometimes go to sleep for their naps by themselves, but not at night.  They are too scared to sleep by themselves (they say).  Any ideas why they are doing this and how I can keep from getting up so many times at night? 

Thanks,

Sarah  

[Asiago]

Could they sleep in one bed, or the twin beds pushed together?

[sept2008twingirls]

They were in the same bed before, but they were waking up because they would sleep on top of each other.  Now the one girl is sleeping through the night.  I'm not sure I want to change that.  I think I'm going to try and have the one who is not sleeping well to sleep on a mattress on the floor in our room, so she can look over and see me but not be in my bed.  We'll see how that works.  Thanks for responding!

[Asiago]

You are welcome. Good luck with the transition.

[sept2008twingirls]

The mattres on the floor didn't work.  I am still getting up with her about 4 times a night.  The other two continue to sleep through the night.  I don't know what else to do, except slowly get her used to going to sleep without me. 

Sarah