Problem: Mr. K is a 68-year-old male who has been experiencing chronic insomnia for over 6 months. He has difficulty falling asleep and often stays in bed for long periods trying to sleep. He has a history of anxiety and reports that he worries excessively about his lack of sleep. Based on CBT-I principles, what would be the most appropriate initial intervention? Need Assignment Help? Group of answer choices Implement sleep restriction therapy to reduce time in bed Start benzodiazepine therapy for short-term sleep improvement Increase time spent in bed to encourage more sleep Use progressive muscle relaxation as the primary intervention