When I switched from Lantus to Tresiba it was because I was having too many crashing lows with Lantus. But I try to keep my what sugars as close to normal range as I can, so I don’t keep much buffer.
I tried using the same amount as Lantus, but dropped two units after only a couple days. I still had to cut back a couple more times. Eventually I ended up using six units less that I was with Lantus.
I did see some changes in how a low develops. The feeling is slightly different and the progression is slower. Also, it doesn’t happen much. While I was working my way down with Tresiba I noticed that my Humalog seemed more effective. I had to dial back that for a while. Now that I have settled in this has all gotten back to normal for me.
I am way happier with Tresiba and how it works than I was with Lantus.