S.W.
We had huge sleep issues as well - with my oldest daughter. My pediatrician suggested the token approach. Give each of them a token before they go to bed. If they wake up in the middle of the night, they "use" it and have to give it back to you. If they sleep all night, then they get to keep it. If they earn 7 tokens (you decide what is realistic), they earn a _____(trip to the zoo, new doll, a day at the park, ect.). Also, when they go to sleep, don't lay down with them, because when they wake up and you are not there, then there will be a void. If they get up, put them back in their own bed (I know you are tired, but you will have to be consistent with this). Don't converse a lot, or scold them much, just "Back to bed." It took about two weeks, but my daughter is finally sleeping most every night (unless she is sick or had a bad dream, which is rare). It is age appropriate for them to have more vivid dreams around this age. I also have three kids and one thing I learned is that it will not help anyone to CIO because then no one will get any sleep. Try a more positive approach such as the token approach. Hope this helps!