T.C.
Two things you might try that worked for us. First we put one of the electronic picture frames next to his bed. When he would get up he would see the pictures and be comforted. Second we got a stoplight nightlight. You can set the time on it so that when it is red during the night it means they should stay in bed or can't call for mom and dad and when it turns green then it is time to get up. These are some inexpensive options that might help. Our son used to get up several times during the night. He would call to us when his blankets fell off, he wanted the fan on or off and so forth. Now we only get it occasionally. Good luck...