I take ambien 10 mg. at bedtime. most of the time when I take it I am able to get off to sleep, but am usually up and down most all night.By morning, I am more able to sleep. So I end up awake most of the night, and sleeping till lunch time. I need to get out of this routine. Any suggestions??? Would the Ambien CR be a better choice for me??? Thanks for any information you may be able to give me