@5uzie . Chill out here. It's a number on a screen, a number that is now history. It's a case of trying different options now BUT most importantly try one adjustment at a time. Changing basal rates and then doing correction doses with bolus will just muddy the waters. Get the basal right even if it takes a few days. Try not to get stressed with high numbers, accept them as part of the learning process.
Are you cross checking your libre readings with a finger prick test? Libre , like a other devices can struggle to give accurate readings the further they go to extremes. It's quite possible your 18.5 could be a 15 on a finger prick. Not ideal but not as bad.
I don't use tresiba, so I can't vouch for its capabilities but definitely stick with it and give it time. One week in your life getting used to using it isn't a long time in the grand scheme of life.
One important thing to remember. Never fight your diabetes. It wants you to fight because it knows you'll never destroy it.
Accept it, let it know you're the boss and you will control it.
The answer to your dilemma is out there and you will find it. Give it time and bask in the knowledge that you're going to come out of this wiser and a more educated diabetic than when you started.
