Hi and welcome Jen and Kitter to the forum.

Sorry I didn't get to you sooner but I had to help a post DKA kitty. You are posting in the right place
First of all I want to say that feline diabetes is a very treatable disease. Nearly all diabetic cats eventually die from something else. I've been here for years and 'Im struggling to think of a kitty that died of just straight diabetes. They die of the usual things all cats die of.
I am going to ask you to set up a spreadsheet and add as many BG numbers as you can...if you can add a months worth that would be really helpful.
HELP US HELP YOU has the link to the spreadsheet, and the hypo kit and other information. I will ask
@Bandit's Mom to pop in and see if you are managing to set up the SS on your own. She can help you with it if you are not.
Have you been doing any hometesting at all with a human meter. As the sensor is running out in 6 days I would recommend you think about starting to do the tests yourself. You can buy the ReliOn Premier Human meter at Walmart for $9 and a box of 100 test strips for $17.88. You will also need a box of lancets size 26 or 28 gauge to prick the ear, and a container of cotton rounds to put behind the ear when you test and to hold the ear afterwards for a minute.
HOMETESTING HINTS AND LINKS
He’s always been a vocal cat, but he cries a lot lately, waking me up throughout the night. His legs look a little wobbly, but I might just be overanalyzing his every move at this point. I’m just starting to feel a bit hopeless with the process.
Are you feeding him during the cycles as well as the preshot meals? DO you think he is hungry?
Are you feeding him 1/2 hour before you give the shots? You need to do this with vetsulin.
If his legs are a bit wobbly, it is most likely diabetic neuropathy which will improve when the BGs are more under control/ There is also Zobaline from lifelink.com which you can give to help it. My cat Sheba had it very badly but recovered fully once the BGs were more under control.
I’m constantly worried I’m going to miss the signs of DKA.
Are you testing for ketones in the urine at all? I would buy a bottle of ketostix from walmart of a pharmacy and test for ketones every few days. Signs of DKA are lethargy, not eating, maybe vomiting and ketones in the urine. So testing for ketones is the first line of defence.
With this current sensor, I’ve noticed him regularly hitting ‘HI’ before shots, and then only gets down to 350-400s. This is concerning me, because when he was receiving lower insulin doses, we were seeing lower highs and lows.
Without seeing a spreadsheet I cant really answer this. It is possible he could be bouncing from dropping lower as he is not used to any lower numbers now. If we can get that SS up and running that will help us a lot.
Vetsulin is not really a good insulin for cats. It is an insulin meant for dogs. I would seriously look at swapping to lantus insulin or prozinc. I like lantus myself.
Cats frequently have a much better response to one of the longer lasting more gentle insulins.
Keep posting and asking questions. Remember that FD is a treatable disease. I don't think Kitter is on the right insulin and that is one of the first things I would change if he were mine.
Bron