Excellent job on the thread title today!
Great job on getting the SS up too!
So, I see you've been shooting previously without testing - around here that's a no-no; but I think you've caught on to that already - so we would definitely encourage testing prior to shooting.
As I already mentioned in the Main Forum since I was tagged - that it might be better not to give her any more insulin until you get some more numbers in her SS - I really don't see any numbers there yet that would warrant giving any insulin at all...so first we need to establish how high and low she's actually going by getting a curve - yep, the good old tests multiple times in a day and night time too (ugh on those night time tests, but oh how those numbers getting filled in will help us all to see exactly how her BG is doing)...we realize that you may have a life other than testing Bee - and it'll take some time to fill in the blanks - but it's very difficult, if not impossible to ascertain a level of diabetes in any cat who's only been tested at the vet - they're often stressed there - even if they're asleep - and with her other health issues it's just difficult to tell what her BG's are really doing from one day to the next.
So, put your Lantus on ice - really I just mean keep it in the fridge. You've got quite an investment there so if you keep it in the fridge it'll last a really long time - I used my first vial of Lantus for almost a year - it was good to the last drop - but must be kept in the fridge - never frozen or left sitting out (no matter what you hear or read on manufacturer website)...for cats - because of their low dosage we keep it in the fridge.
We've already chatted about her diet - I hope those tummy issues will settle down - that's going to take some trial and error to see what she can keep down (and in) w/o the diarrhea and vomiting issues - a challenge for sure. You can keep notes on your SS about what she's eating and the results of those meals - as to what is making her sick vs hopefully some food items that won't.
At what number would you recommend resuming her injections? Our syringes have half marks; should we do a half unit tonight if numbers stay above 150?
As I've just mentioned - without some mid-day tests - I wouldn't shoot at all. The thing about Lantus is there's an active cycle that happens during the middle of the day - some cats earlier, some later - and if you look at the numbers they're typically higher at AM or PM (AM morning, PM evening) PS = pre shot times....so based on the lowest number in the middle of the day we determine best dosage - so it's most important now to take it slow - find out how low she's going - without any more insulin - you've had 60 hours since the last shot - but there's still the 'depot' in play - another effect of Lantus - it builds up in their system and we call it the 'depot' - no one knows how much insulin she has in her depot or if it's all drained out...
If you can, please read the stickies at the top of this forum. There's a ton of information there and it'll help you get a grasp of what's going on here....but for now, I'd suggest holding off on giving any more insulin until we have some mid-day tests - every two hours if possible to see what's happening with her blood glucose.
I saw your comment about all the wiggling and difficulty getting the tests - and I have to tell you the first few months we had to test Luci it was a two person job. She was never a 'sit in your lap' kind of cat and didn't much care for the whole experience of being 'trapped' by DH or me and then - dear god - poking her in the ear lobe! She growled and hissed and wriggled around...and the biggest thing that helped us was 'the treat' - the heaven-sent treats! She'd participate (well briefly at first) when a treat was involved. Sometimes we'd just get her on the counter (it was where we could see best - and reach her the easiest)...we set out a towel, laid out all the testing stuff and would hold on to get that little drop of blood on the test strip. The first weeks were very difficult and I was convinced that this was never going to work - but we were very determined to save her life. I've told this tale of woe a zillion times...but it's good to know that we've all struggled in the beginning. It also helped a lot just to get her on the testing towel, rub her ears, pet her and talk to her - and not test - then she got a treat...ah ha...what was this all about? Food!

Luci was a fool for a nibble...and so every other time we'd really do a poke...and then she got food...soon it wasn't so bad to get her up there...and she'd hold still...because for her it was all about the food...now I whistle for her - he comes and gets on the towel and lays there purring - REALLY! while I do what needs to be done and then she gets a little snack for her trouble.
Take a look at our SS and you can see how often Luci puts up with all of this. Our vet told us if it were his cat, he'd put her down...she'll never allow you to give her insulin or test her...so much for his advice!

But you've got the cool vet and it sounds like he's supportive...so start that testing routine - go to the same place every time - whether you test or not - offer a treat.
I've ordered treats from Chewy that are pure freeze dried rabbit, chicken or salmon...might be good to get some of those and try them - they're very simple - no mixed in junk - just freeze dried meat...check it out...
Keep up your SS today - lots of folks will try to provide you support and guidance
