Thanks for sharing your story. I also started on Lantus but am much happier on Tresiba. My needs are slightly less than yours are, but I think I went though a lot of the same adjustments when it came to getting the dosage right. I think in the end it took me about a month to find the right dose.
The biggest adjustment I had to make, however, was a mental one. I was so used to having higher numbers that it unnerved me to see my numbers dropping below 100. I just felt more “comfortable” with numbers around 120 and I thought that anything under 100 was inevitably going to lead to hypoglycemia. But our job as diabetics and insulin users is to as closely mimic a non-diabetic as possible. That means trying to keep numbers between 70 and 100. So once I made that mental switch, I began being more patient with my low numbers and would not react as drastically to a falling trend as I used to. As a result, I often see numbers fall to around 70 and then safely hover there.
Obviously everyone is different and will react differently to the same medication, but I would encourage you to be patient with yourself. Long-acting insulin like Tresiba is supposed to keep us stable overnight. My stable overnight number is around 70, but it took me a while to be comfortable with that and to not view it as a hypoglycemic low. If you’re constantly trending downwards overnight, then you need less Tresiba. But if you are flat overnight, then maybe being at 72 isn’t as a big of a deal as you think it is.
All this being said, I am NOT a doctor, I’m just something sharing advice based on my own experiences. But once I made that mental switch to viewing 120 as high and began being comfortable around 70, I realized that I had found my ideal dose of Tresiba.
Good luck.