It seems like cat bodies "forget" fairly quickly that normal numbers are normal. As they sit in higher numbers - most cats are diabetic for a while before they get diagnosed - their body accepts that as normal. Then when the insulin brings them into normal range, the body reacts as though it's actually a hypo. It's lower than they are used to, so the body treats it like a hypo, releasing sugars and hormones to raise the blood sugar back up into the high numbers that it now thinks are normal.
On 5/20 the daytime cycle was a normal Lantus cycle. The pm cycle was a normal Lantus cycle.
On 5/21 & 22 the daytime cycle was a bounce cycle. 5/21 looks like a normal pm cycle, but tonight looks like he's still working on clearing the bounce.
The more time he spends in normal numbers the more his body will "remember" that it's normal. You just keep plugging and eventually Juju will hopefully reduce his bouncing.
In the meantime, he's clearing bounces in 24 hours or so most of the time. That's pretty good.
This post has an explanation about Failed Reductions, New Dose Wonkiness and Bounces. The only reason for waiting after a dose reduction to see if it's going to work is if the cat bounces from the low numbers that caused the dose reduction, you just wait for the bounce to clear to see if the cat's going to stay in healthy numbers at that new dose.
I don't think we're going to see solid greens on this dose no matter how long you wait. I would go back up to just under the 1.25u if I were you, just making it a shade less than the previous 1.25u - call it a skinny 1.25u.
And no, no one wants to whack you! It's good to ask questions on whatever isn't clear. If you don't have this post
"Where Can I Find?" you might want to bookmark it. That can help you locate where information is in the group.