Hi Karolina, I can't see any data on the SS after the AM cycle of 5/11.
Do you use callipers for measuring the dose?
He does look good and has earned a reduction to 2U. Why not give it another day or two and then attempt a reduction. He might just decide to work the reduction this time (paws crossed!).
2.0 units would be a nicer dose for the petsitter to draw. I like that solution.