@hanstan I’ve used Novolog and Humalog they both are equal for me. I usually use Humalog because I figured Lilly saved my life at the beginning. I think I tried Apidra but not the bio similar yet.
Anyway I always bolus early for restaurant food and for really fast carbs. For Chinese take out I bolus, wait till I am dropping and then eat.
For ice cream and pizza. I take maybe 20% up front and the rest over 4 hours. It works out to about 1.5 units per hour for the 4.
Honestly it could be anything. It could be a nerve problem like Gastroparesis but that isn’t likely. I’ve always thought of diabetes as a moving target. Once in a while you have to redo basal rates, re figure ratios and whatever it is it is.
I had a week (at the beginning of summer) of perfect blood sugar control using less that 50% my normal insulin. How? Well it wasn’t my pump that’s for sure. Every once in a while I make a little of my own insulin and it starts with crushing lows and makes me feel like a beginner again. Or usually that I’ve lost my mind and bolused twice for lunch. Whatever. I enjoy it while it lasts and then things change again.
I would try to get the rate right for what you eat most of the time. Who cares if it works out to 1/2 or 3x the carbs it’s supposed to be.
Retesting basals are really important nothing in the pump works right with a bad basal rate. It’s tines like these I get out my CGM. It’s a pain in my rear (literally) but this is where they really come in handy.
Hope any of this helps.