r here. It may seem that "every
one else" has perfect a1cs and just does a tweak here & there to
align anything that's amiss, but I'd be willing to
bet that the truth is far from that.
Type 1 is a delicate balancing act and unless each day is exactly the same (food, exercise, stress levels, sleep, health, ideas), then each day's management is a bit different from the next.