Spreadsheet link is working great nice job on getting that up and working now if we can just have you link it in your signature so we can refer back to it when needed without you having to repost it all the time would be great.
One thing I can't stress enough is if you are only going to get a few tests in each day two of those need to be PRESHOTS. Every day and both shot times.. They can be the difference between coming home to a live cat or a dead one. Yes, that sounds harsh but they are that IMPORTANT. If she was at say that 27 first thing in the morning and you gave insulin without testing and then had to leave even to just run to the grocery store for a couple of things you could very easily come home to a dead cat. Insulin isn't like almost any other drug, it is a hormone and an extremely powerful and sometimes lethal one. If you don't know where they start out each and every day there is no way to tell why the mid-cycle numbers are doing what they are doing.
Yes, that 27 earned her a dose reduction. So I would, if she was mine, keep her at that dose for a full week, while working on getting as much data through testing as possible.
Here is a very telling story on just how quickly things can and do change with our sugar cats. I adopted Maxwell on October 15th at the time he had been fostered by a wonderful woman with literally decades of diabetic experience and she was testing him often and never saw a number that would suggest that 1u was too much insulin for him, then he was flown here to me, somewhere in that transport he decided to go into remission. I gave him a total of a full dose of 1u and a half dose at .5u and he never looked back for now going on 4 years. Had I just blindly given him that 1u bid and not tested he wouldn't be here today, let alone living the good life of a diet controlled, well loved and pampered pussy cat. I would have killed him because I didn't test before giving insulin.
My Cassanova was grossly overdosed when I adopted him at 11u bid being shot blind. The first few days I had him at my home and started testing him I saw a wild roller coaster of numbers with him going anywhere for 400s to 15! And that was on his shed alone because it was so large from the overdosing prior to my adopting him. I slowly started him back on insulin once his shed completely drained and he never went above 1.5u bid until in September he went into remission, he is back on the juice now because of him being stupid and getting himself burned on the oven a couple days ago but it should be transient as he's back on due to the steroids in the salve for his burned paw pads. But without testing him I wouldn't know when the steroids clear his system should he go right back to being OTJ again.
Mel and The Fur Gang