Cheese souffle: a bit confusing about adding batter to egg whites, then adding whites to batter. tired

Thanks so much, Nancy! Couldn't get rid of the word "tired" before sending...

As with most souffles, the process is:
• let the cooked yolks-cheese mixture cool down a bit.
• whip the egg whites
• fold whites lightly into yolks mixture
• pour into prepared baking dish
• bake
• serve.