No insulin formulation, by itself, will restore your blood glucose to optimal levels. Having said that, the newer insulins have become better over the years. In this case, newer basal insulins produce flatter action curves and for many reduce the daily basal doses down to one per day.
If you’re keeping good records, why don’t you experiment with your Tresiba and Toujeo samples? The best place to start is by seeing a competent doctor, possibly an enodcrinologist, to help guide you.
Last year I experimented with Tresiba as I disconnected from my pump for three months. I told my doctor that I thought using the 7-day basal average over seven days would provide a good starting dose. She agreed. For me that was 14 units/day. I eventually moved that up to 19 units per day.
Tresiba performed very well for me but I wasn’t able to eliminate a morning rise in blood sugar due to dawn phenomena without going low in the late afternoon. There are many people in this community, however, who use Tresiba and enjoy great BG control. Good luck.