There's a balancing act due to the recent DKA, especially since the ketones developed so unexpectedly. We're just suggesting being very cautious because of how serious this can be.
First, I would do what you can to check for ketones daily. As you saw, they can develop quickly. Anything you can do to intervene sooner rather than later will help to keep Choco from ever allowing ketones to be at more than a trace level. This is the best prevention you could possibly do.
There are three things that contribute to DKA: not enough insulin, infection/inflammation, and not eating. On Friday, it was the lack of insulin and lack of appetite coupled with his lethargy that caused me to suggest you test for ketones. You have control over the insulin and food. Given where Choco's AMPS was, I understand why you didn't give his full dose. Right now, it's a balancing act between all of the elements in Choco's care. If he doesn't eat when you're there, it's helpful to have someone who can stop by, make sure he eats, and maybe is able to grab a BG test. This would be temporary until you're sure Choco isn't at risk for DKA. If your sister would be willing to lend a hand, that would be fantastic.
I don't think anyone is suggesting you need to be there 24/7. I'm just cautious because I don't want either you or Choco to go through another episode of DKA.