A nurse is reinforcing teaching with a parent whose preschooler has sleep disturbances. Which of the following instructions should the nurse include?

Sleep disturbances in preschool-aged children are often influenced by environmental stimulation, inconsistent routines, and behavioral factors. At this developmental stage, children require structured bedtime routines to support circadian rhythm regulation and promote adequate rest for growth and cognitive development. Excessive stimulation from electronic devices can interfere with sleep onset and quality. Nursing interventions focus on establishing consistent, calming bedtime practices that promote sleep hygiene. Rationale: A. “Avoid using a night light in the child’s bedroom.” This is incorrect because a soft night light is often beneficial for preschoolers who may have fears of the dark. Completely eliminating light may increase anxiety and worsen sleep disturbances in some children. A dim, comforting light can support a sense of security and improve sleep onset. B. “Limit media use before bedtime.” This is correct because exposure to screens such as television, tablets, or phones before sleep can stimulate the brain and delay melatonin release. This interference with the sleep-wake cycle can make it harder for preschoolers to fall asleep and maintain restful sleep. Reducing screen time before bed promotes better sleep quality and consistency. C. “Allow the child to stay up later.” This is incorrect because inconsistent or extended bedtime can disrupt the child’s natural sleep rhythm and worsen sleep disturbances. Preschool-aged children require adequate and consistent sleep schedules to support development and behavior regulation. Allowing later bedtimes may increase overtiredness and difficulty falling asleep. D. “Alter bedtime rituals daily.” This is incorrect because inconsistency in bedtime routines can increase anxiety and reduce the child’s ability to associate predictable cues with sleep. Preschoolers benefit from structured, repetitive routines that signal bedtime and promote relaxation. Changing rituals frequently can contribute to confusion and sleep resistance.