Do you know what it means to “super-bolus”? I’ll let you Google it on your own. I’m not a big fan of a lot of the explanations I read. Essentially though, it lets you borrow some extra insulin from two hours of future basal. You should be able to add two hours worth of basal insulin to your pre-bolus, and trust Basal-IQ to suspend the extra insulin from your basal later. This means you get extra insulin up front to cover your post-prandial spikes.
The catch is, you’ve got to have your settings correct. It looks to me like your correction factor is too high, so it’s not suspending enough insulin soon enough to prevent the hypos 4-5 hours after the bolus.
More insulin up front, reduce your correction factor so you get less insulin on the back end.
You made another post recently where all your insulin was being suspended during your pre-bolus and then you still spiked high afterwards. You would still want to super-bolus to cover that coming spike, but in a case where you’re trending low like that, it’s time to eat. You don’t have to wait that whole time if you’re predicted low.
It’s a lot of little innuendos to figure out… The super-bolus is the greatest advantage I know of for us carb eaters. Without it, your graph is exactly what’s to be expected, and why so many diabetics find it easier to just low-carb it.