Kelly complains that her heartburn keeps her up at night and she cannot get a good night's rest. She eats a snack in the evening while watching television because she feels hungry several hours after dinner. To offset possible heartburn, she takes an over-the-counter antacid just before going to bed, yet she still wakes up during the night with heartburn and indigestion. To best avoid heartburn while trying to sleep, what would be the best advice to give Kelly?