if it were me, i'd be testing every 30 minutes at this point. only because that quick drop from the preshot number to the +2 is usually a signal that the cat's BG is going to do some significant dropping. without knowing jynx's patterns, i don't know if he's now going to stay flat for the next 4 hours or if he's going to be at 30 in 1/2 hr. my cat is a "flat cat" and he doesn't move much, but we don't know about jynx yet. so i would test every 30 minutes -sorry. i'm sure you'd have rather heard every hour, but without knowing, i'm just saying what i would do. i'd probably also keep giving him the same amount again of the high carb canned food. that's what's keeping him from going lower.
it's basically a lather, rinse & repeat process.
test, give a little high carb food, wait 30 minutes in the 60's, but if he's in teh 40's only wait 15 minutes before repeating.
then do it again.
you want him past his nadir and 2 rising numbers in a row. i like to see punkin above 70 and past +7 before i stop. a lot of people set cell phone alarms so they can sleep in between, and fortunately this won't happen to you every night.
i'm headed for bed now, but it looks like you feel pretty comfy. good luck tonight!