Hi, I was on a mixture of Toujeo and novorapid for a few years and found it near impossible to control my mealtime blood sugars. My diabetes team instructed me to do a basal test, where I would give 32 units of Toujeo at night, and then skip a meal and bolus to test that the long acting was working correctly. For example, I would go to sleep at around 9mmol, with 32 Toujeo, and when I woke up I would expect to be 9mmol give or take 2mmol (7-11 mmol), and If i was higher or lower than this at waking, I would adjust my basal by 2 units the next night and try again. Once I had my waking insulin right, I would do the same and skip breakfast and my breakfast bolus, and my blood should stay level until lunch (around 1pm), and repeat for all meals.
After trying all of this I was still struggling with keeping my blood under control, every meal time I would spike, or hypo, but my basal tests were showing fine. I have now switched to a split levemir basal long acting dose (13u in the morning and 13u at night), and that seems to work better. Toujeo is a 24 hour lasting basal, but my DSN said a lot of people struggle with it because they need less basal overnight and more during the day, meaning your overnight bloods would be fine and then your daytime ones are out.
Maybe asking to switch to a basal with a shorter acting time and taking two doses would be helpful?
