Your FT3 is low in range. You'd probably feel better if it was higher. Normal is not the same as optimal which should be the goal. Your GP should be treating your symptoms and using the labs as a tool to back up the diagnosis. Ring & ask whether it would be okay to take 125mcg daily.
For now, make sure you take your levo 1 hour before or 2 hours after meals, tea, coffeeand 4 hours away from calcium & iron if you supplement. Taking levo before bed suits some better than morning dosing.
Get plenty of sleep. Aim for 10+ hours & nap during the day if you need it.
When you return arrange ferritin, VitD, B12 & folate blood tests. Deficiencies and low in range inhibit absorption & utilisation of levo.
Its a slow business getting right after TT but it will get better. I hope you enjoy Xmas and NY.