A 14-year-old patient is being managed for generalized anxiety disorder and has been responding well to fluoxetine. However, both the patient and his mother report that he has chronic difficulty falling asleep. He denies any racing thoughts at bedtime; he just cannot seem to fall asleep. His mother has been giving him melatonin gummies purchased over the counter from the pharmacy and reports that there is some improvement but would like to know what else can be done. The PMHNP advises w...