My son's almost three. �I don't know about insomnia, but when he's sick I try to keep him asleep almost all day and all night because I believe it helps the body heal faster. �You know he'd rather get up and play. �The way I do it is to tell him "you don't have to go to sleep. �Just lay still and be quiet and close your eyes.". Then I lay beside him and lay still. �I breathe deep, slow, rhythmically and loud enough to be heard. �I check to see if he's too hot or too cold. �When they're asleep if you look at them and they're starting to scootch up into a ball they're getting cold and they will wake up.
Personally I sometimes can't resist the temptation to get up and do something else sometimes after it's my bedtime. �I also remember my mother telling me that I used to walk and talk in my sleep. �She said I would get out of bed and find her and start carrying on a conversation like nothing. �She said I would then say something totally off the wall, that's the only way she'd know I was asleep. �One time when I was five I walked out of the house and two blocks away to a friends house in the middle of the night in my sleep. �(they installed a deadbolt above my reach after that one). So I guess that even if you can "turn off your mind" and go to sleep, maybe that doesn't mean your brain and body has to go along with it. �