Glucose Retest

I didn’t pass my 2nd 1hr glucose test, so they want me to do a 2hr test. The instructions they told me was to do a carb load for 3 days, eating 150g of carbs, then fast the night before from 9pm until when the test is over. My question is, when I’m tracking the carbs I’m eating, is it strictly the “total carbohydrate” amount, or do you have to do something like net carbs... total carbohydrate minus dietary fiber or something?

I feel like I’m overthinking this.