My cat has typically hit nadir sometime around +3. He's just recently started to shift to a more typical time. So don't worry about the rise you saw. The 95 and 127 aren't really that far apart, it just looks like a bigger deal because of the color coding.
As for if it's better to be lower, mid, or high in the 68-150 range -- it depends. If you are around to monitor, you can aim for cycles that are a little lower, but for folks who are gone at work all day, we tend to recommend aiming a little higher for the sake of safety. The reasoning for that is that no matter how careful and consistent we are, sometimes cats just drop lower for a cycle, so it's nice to have a little safety margin.
Oh, and a cycle is 12 hours. So there are two cycles each day. AM and PM. The data you are getting in the PM cycle may be a bit lower than what you would find during the AM cycle, but that's okay since it will give you the more cautious numbers. If we only saw the AM numbers we could end up slightly overdosing at night.
Also, don't worry too much about curves. It's nice to get them, but if you look at my spreadsheet, you'll see i've almost never don't a full curve. I usually just grab mid-cycle numbers here and there, and those work together to build a picture of how Sam is responding. I tend to focus them around his nadir time, but once in awhile will grab tests outside of that window to make sure there isn't something strange happening that I haven't noticed.
Re the recent low numbers, you need to get BG numbers up faster if Oreo goes low again (and I really hope she doesn't!). Please check the following link for recommended supplies for treating hypos:
Where is our eating crow emoji? 
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(Didn't chime in earlier about this because of lack of experience with P insulins.)
Does Young Again put on weight? I need something that my cat will gain weight on and wet food doesn’t have enough calories.Most kitties don't show symptoms until they get really low. All of this testing and snacking is just in service of keeping her away from the dangerous lows.
That makes sense that the nighttime snack is just her habit. I like a bedtime snack too.
Have you tried Young Again Zero Carb? It can be ordered online and lots of folks around here use it if they can't get their cats off of kibble. It's lower in digestible carbs than any other kibble, so for most cats it doesn't mess with their BG as much. It's expensive, but most cats only eat about 1/4c per day (and less if it's just fed as a snack) so apparently a bag lasts a long time.
Hi Jena- It sounds like you have a few questions. Have you made a thread for Abby? (I haven't finished working through the list yet tonight, so I might have just not reached it yet). If not, you might find it helpful to start a thread so you can keep your questions and responses all in one place and not lose them in the middle of other people's threads. Harder to find later if you want to refer back.
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I have been working on this for six months....
Yes, if you had given the 0.25u tonight, you would have gone back to 0.75u in the morning (assuming the numbers allowed it).
And yes, I would recommend sticking with the 0.75u tomorrow regardless of how high the AMPS number might be. I'd be surprised if it's higher than a low yellow anyway (although I'm often surprised by our kitties around here
As for AM/PM doses, typically you want to keep them the same, although there are times when a kitty runs so much lower at night that we end up recommending slightly different doses.
Is Oreo still getting the DM dry? If you really really want to keep giving her dry, I'd recommend switching to YAZ when you can so she isn't getting the carbs from the DM. It may be enough to make the difference for her in all of this.
Yes, you are aiming for dark green, but if you're still getting numbers that make you feel like you shouldn't shoot, then I wouldn't increase the dose right now. FWIW, I think you could have given the 0.75 on the 151. You gave that dose on a 159 and she stayed flat through the cycle, granted it was an AM cycle and as you said she runs a little lower at night, but the numbers you got show she would have been okay with more. That's the tricky thing - we always know in hindsight....
One thing about the YAZ is that their directions are adamant that you have to feed only YAZ. Please don't follow that. Wet food is way better for them, and lots of folks around here just use YAZ for treats or occasional leave-outs and do just fine. As far as the transition, assuming she likes it, I'd go with 25%/75%, then 50/50, 75/25, 100% and how quickly depends on Oreo. Does she usually do well with food transitions? Or does she need to move slowly? You could probably transition over about a week, but could move slower if needed, especially taking into consideration your scheudle. I would aim for the move to 75/25 to be on a Friday evening so you can monitor, and same with the move to 100%. So it may take a couple of weeks just to allow for monitoring.
I've read on here that some kitties get the runs as they move to a higher percent of YAZ, so that's something to watch for. I believe I've read that it goes away in time. The slow transition might help with that too.
I don't use this food, so hopefully if I've said something wrong here, someone who does or has used it can chime in with any corrections!
Yes, it's possible to give a different dose AM and PM. My suggestion would be to try 0.5 u both AM and PM for a few cycles to see what happens, especially overnight and go from there. It's possible that .75 u in the day and 0.5 u at night would be a good routine but there's been quite a few dose adjustment over the last several days. I like to get things calmed down to see what patterns emerge before PS-adjusted dosing.
Exactly!
I suggest you phase it in very gradually. Some cats have had diarrhea from the YAZ.
You could try 0.75 u tomorrow AM and leave the PM dose at 0.5 u.