I use bernsteins approach but I’m on humalog so this probably won’t be much help.
I do my own version of the pump and stay rock steady. I don’t like large or heavy meals ( generally) so I eat small meals every three hours and inject for each of course.
For me, I’m pretty sure my basal has run out by morning as I only take 2 units and I just continue to rise after I get up. I also require a small bolus an hour or so after bf once I start moving around to stop the morning rise. I take 1/2-1 unit per meal, time of day and meal size dependent so I’m also sure I run out at the 3 hour mark.
That being said, if I have a fatty burger or high animal fat meal I do need to split my bolus. Mediterranean fats not at all. I also keep my proteins at each meal modest as I gluconeogenisis like a rock star.
I am jabbing a lot but small doses. My fingers hurt worse than my stomach.
So I’m sure this was of very little help to you lol.