Hi Becky,
Amy's got some good thoughts - skipped doses contribute to erratic numbers. Some cats are also bouncy. those things combine to make a head-scratching spreadsheet in the beginning.
i can see that the 1.0u can bring Nava down into the 50's, so i wouldn't increase the dose. You don't want him lower than that. Lantus dosing is decided by the nadir (low point) that a dose will bring a cat. I think you've got a good dose going right now and I would stay with it.
There's nothing mysterious about his spreadsheet, though. he's not a high dose kitty, he is responding to the insulin. I think what will help you is holding the dose and getting at least one mid-cycle test in each cycle. So many cats go lower at night and the evening cycle test is really helpful for us to see. Vary the times of the tests and it will help fill in the larger white areas of the spreadsheet.
When you're confronted with a preshot that is lower than you've shot before, if you're able to be home and monitor, Nava is handing you an opportunity to help his numbers settle down. The saying here is "shoot low to stay low." If you were to shoot a 140, you very likely would find that her entire range of blood sugar numbers would lower and might flatten out. If you're able to monitor next time that happens, post here and ask for help.
Usually the first time we suggest someone not feed their cat and stall a few minutes and retest to see what's happening. If the number is fairly flat and you're going to be home, shooting low is an awesome technique that can be very, very helpful. Take a look at the "Handling Low Numbers" sticky at the top of this forum and read the parts about becoming data-ready and shooting low numbers. I think of these lower preshot numbers as a gift - as strange as that seems - because they really can make a big difference in reducing the bouncing and flattening out a cat's blood sugar.
Take a look at Davidson's or Boots (on an OTJ trial) spreadsheets. Scroll down each one and see what happens when they begin shooting lower numbers. The whole range drops and flattens, and the "curve" of lantus becomes a line. THAT is fantastic for a cat. That is also the path for a cat's pancreas to heal.
I know it's counter-intuitive to shoot a low number. i know i thought if a dose could drop my cat 200 points when i shot a 300, if i shot a 100, my poor cat would drop to -100 and die - but it doesn't work that way. I think you'll see what does happen when you look at their spreadsheets.
How does all of this sound to you?
