Hi Marie!
I agree that tonight's numbers are due to a bounce from the low number this morning. What happens is that our cats body gets used to living at those higher numbers, so when the insulin brings them down into "normal" numbers (or even just numbers lower than they're used to) the liver releases stored sugars and hormones to bring them back up to where it's used to being.
What I would suggest is holding that 1.5 unit dose for at least 6 cycles and let's see how it goes. If Princess should drop below 50, she'd earn a reduction of .25 unit
Please try to get some tests in at night too...at least a "before bed" test. Most cats go lower at night, and by getting a last test before you go to bed, you might catch her dropping and know you need to set an alarm to get more tests in.
Think of the spreadsheet as a puzzle...if you only have edge pieces filled in, it makes it really hard to tell what the picture is, but if you sprinkle pieces throughout, the picture becomes clearer.
We usually tell new members that if they get a Pre-Shot under 150, they should "Stall", DON'T feed, and post for help so someone with experience can advise you. Make sure your subject line says something like "stalling, need help!" so the people that scan the forums know you need help. If nobody has had a chance to get back to you, retest in about 20 minutes and if the number is starting to rise, it's probably fine to shoot, but you should make sure you get a +1 and +2 to make sure.
If you'll start posting in the
Lantus/Levemir insulin support group, you'll get the benefit of the most experienced eyes to help you learn how to help Princess, so I hope to see you there!