Yes - looks like you usually feed at +5? maybe part of that snack? How much do you usually feed then?
I'd do low carb - maybe do two teaspoons and test in an hour? If you are nervous, you can test in 30 (and/or feed mc).I give him roughly two tablespoons. I can give him some now. Should I feed low carb or medium carb?

Henry had a beautiful cycle - next time he goes two hours without food and holds steady, you can probably call it a night (I would have called it a night at +6). You have lots of data for next timesteady
Here's some 

for today 