The smallest increment that syringes are available in are half unit. You have to eyeball the quarter units. Take a look at this photo. It may help.
The ketone meters typically require more blood than a regular meter. It may take some getting used to. If you can get some Ketostix and test that way, it would be helpful.
If George wants rotisserie chicken, as long as it's not been brined, it's OK. Right now, with a post-DKA kitty, food is an important part of keeping him safe. My general feeling is that if your cat wants a hot fudge sundae, let him have it. (Well, maybe not the hot fudge since chocolate isn't good for kitties.) We can always adjust insulin around food if necessary. Food will help with the ketones as will keeping him hydrated.
Here's the dilemma. If ketones are present, you need to increase the dose.
If ketones aren't present, you want to try to avoid increasing the dose at the same time the bounce is breaking. When a bounce breaks, there can be momentum behind numbers coming down. If you increase the dose, you can be adding to the momentum.
If you increase tomorrow, you'll need to be available to monitor and have a stock of strips and high carb food just in case the numbers drop.
Regarding the Wellness, there's a post regarding some of the issues. The cans manufactured in the US have a different texture than the food manufactured in Canada.