Your CGM shows you on a sharp downward trend. You've gone from 210 to 100 in about 30 minutes. Fortunately, you're about to eat a full meal.
1) Eat the full meal without a bolus and see how your BS plays out before giving yourself another bolus later on to cover whatever the downward trend didn't cover.
2) Eat the full meal while giving yourself a bolus less than you'd typically give for the food based on the trend.
3) Forget the meal, and eat some fasting acting sugar first to level out your BS, and then have the full meal with the normal bolus dose you'd usually give for the food you're consuming.
4) Something else?