Here are some things that come to mind:
1.) What were your last couple of meals yesterday before you started your insulin?
Hopefully they were liquid/high GI meals. Kind of low-moderate calorieated. The reason being that your body will use up these quick GI carbs faster than whole protein and fats. You should not have eaten any solid proteins, carbs, or fats because this will slow down gastric emptying. Thus, it will take longer for your body to digest the foods, and it will take longer to get into ketosis. This is a VERY mislooked mistake that MOST people make when stopping their carb-up before trying to deplete blood glucose/glycogen levels. I can't stress this enough. I am not saying you did, but I would like to make a point to all those reading this, DO NOT EAT ANY FATS, WHOLE PROTEIN (or casein), OR LOW GI CARBS FOR YOUR LAST COUPLE OF MEALS OF THE CARB_UP!!! NO CHICKEN, BEEF, PEANUT BUTTER, FATS/OILS, MEATS, OR LOW GI CARBS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2. After your last Carb meal, did you have any "keto" meals? In other words, did you have a fat/protein meals after your last carb meal yesterday?
I highly recommend that when you have your last high GI carb/protein meal (glucose/whey), that this be your last meal of the night. I do not eat another meal until after I do my morning cardio on Monday (the next day). The reason being is the same as in #1 above.
3. The same as what MS said. But, it IS strange that after taking all the insulin you used, with no carbs eaten, that it would not be a little lower. I don't know.
MR. BMJ