Hi. If you are on once a day insulin then you still have some pancreatic function left. The 12 units of Lantus implies you are very sensitive to insulin i.e. aren't insulin resistant. I'm the same i.e. 10 units of Levemir at night. With once a day insulin, not taking it will 'just' cause a big rise in blood sugar. A full-blown Type 1 on 4 injections a day would rapidly go into Ketoacidosis and probably a coma. Yes, the cycling will help just as my gym does. Some people have honeymoon periods and others don't so only time will tell. Avoiding becoming overweight will also avoid becoming insulin resistant.