Hi everyone i have been on Levimir 15 years and think my body has started to become resistant to it i was told about a background insulin called tresiba and am trying it out next week my sugars are currently up and down and cannot seem to balance them out so my diabetic nurse said this insulin should work for me has anybody else tried tresiba and what do you think as I have abit of anxiety at the thaught of changeing over can anyone help me please?