C.L.
Check out Mary Sheedy Kurcinka's book, "Sleepless in America." She really helped me with my boys, and she might have some tips for you. One thing I know she would recommend is to stop watching a video before bed even if it seems low key or relaxing. There is something about the lights from screens (computers) too that have a physiological effect on the brain and can interfere with sleep. Mary told me no TV, computers, any type of screen after dinner when my boys were little. Good luck.