Here's a thought...don't tell him. LOL! I found that it was best if I told the vet that Luci is diabetic - we're here for xyz...yes, I'm treating her with insulin and I keep a log of all her tests - showing them the SS - their eyes usually grow wide! At that point some vets have said WOW! Others have said, call me next week and I'll advise you on changing the dose (up or down)...at which point I respond...uh huh...thanks...and that's the end of that. It's better to leave the other animal health issues to the vet and keep your FD issues here.
This group has proven itself time and time again - more collective experience and wisdom here than I've ever gotten from any vet encounter - E.V.E.R.
You're doing great already for KittenCat! You'll have to teach her that touching her ears isn't the worst thing in the world...my Luci was a regular hellcat when we started...it took two of us to hold on to her and get a test - every single time - she didn't like it one bit and let us know of her displeasure...but I would tell her this is life or death Luci - yours! So get with the program and we'll get this test done...and do you know what? After a while she started to PURR, yes, PURR while I stroked her with the rice ball sock - I always warm it in the microwave and she just fell in love with that sock...and now she gets onto the testing towel and purrs the whole time..but it wasn't that way until after we'd been at it for a few months I think...it was always a struggle before that...
So hang in there...you two will get it!
One other suggestion for you to consider: You might want to think of getting her first test as soon as you get up in the morning - then get your shower, get ready for work, all that - so you can get another test just before leaving. IF you encounter a lower than expected number, you'll have a little cushion of time to wait 20 minutes, then re-test; then proceed with shot or no shot decision.
I know people who get up at 4:30 in the morning to test their cat so there's time for all the shenanigans before leaving for work...it's a process...so having a bit of extra time in the morning for all this FD fun is a lot less stressful than shooting and running out the door...
I hope you'll think about it...
Have a lovely evening!