I am waking up unrefreshed for last seven eight months ,, especially after lunch I feel even more sleepy and tired ... did all check thyroid , glucose (pradinal, post pradinal) , cortisol, testosterone, iron profile , luetnizing hormone ,sex hormone binding globulin , all CBC , liver function test , echo , ecg, chest x ray , ultrasound abdomen scan , vitamin b12 , PFT all are fine ... but vitamin d is 27.1 and ldl is 142 borderline high with healthy HdL I have deviated septum in my right nose ... sleep gets disturbed mildly where I toss in my bed at least five to six times during the night ... also I had a habit of sleeping late , disrupting sleep ( sleeping at 4 am sometimes) till November 2025 which I corrected now ... should I go for sleep study to see if deviated septum is causing this ? Or do you suggest something else