My problem is that I can't sleep for a long period straight. The maximum I can sleep is 5 hours, then I wake up fully refreshed. After 12 hours I feel sleepy ag

My problem is that I can't sleep for a long period straight. The maximum I can sleep is 5 hours, then I wake up fully refreshed. After 12 hours I feel sleepy again and I need a 2 hour nap. I tried to force myself to sleep for a long straight period but it ended up worsening my depression and anxiety.