I agree with with my colleague's statement. My aro will simply stop aggressively going for the food. If I continue feeding, then he completely ignores it. Safe bet in my opinion is one he stops 'freaking out' over the food, then I stop for an hour or two and come back for perhaps 3-4 more meal worm.
In your case, maybe 1 more king worm would do after a 1-2 hour break.
However, I'd like to see more responses to both your question and my answer.