My Name Is Tom P. I Am 52 Years Old,

My name is Tom P. I am 52 years old, male. My Free T4 ( Thyroid Screen ) is 22.3 pmol/l, which is very close to the upper limit of 22.7. What will be the risk that I may encounter? What sorts of medical attention I should seek for?

I sleep 6 hours every day, from 11pm to 5am. I fall sleep very easily ( less than 10 minutes ) but there are a lot of dreams throughout the night which I could not remember/recall after wake up from sleep. I feel tire ( not enough sleep ) the next day but if I go for a short nap ~ 1/2 hour, I will be fresh and energetic.

Please advise, thank you.