A 42-year-old man with daytime drowsiness reports that he go…

A 42-year-old man with daytime drowsiness reports that he goes to bed around 11 pm and has no trouble falling to sleep, but frequently wakes up in the middle of the night and is not able to fall back to sleep. As a result, he does not feel rested when he gets up at 7 am. He drinks 3 cups of coffee in the morning, usually before noon. He eats a big dinner at 7 pm. About 2 hours before bedtime, he snacks on popcorn and has 3 beers. Based on this history, which of the following would be the best recommendation to improve his sleep pattern?