Night before, mix 75 grams sourdough starter + 75 grams white flour + 75g water
Cover overnight.
In the morning, add 75g white flour + 75g water. Mix and cover.
Then, either lunchtime or early afternoonish, add 125 g whole wheat flour, 1 tbsp oil, and 1 tsp salt. I stir the oil and salt in first before adding the flour since it's easier. You may need to knead it a bit to get it to mix well. Then cover until needed for pizza.
Heat oven to 500F. Stretch out dough by hand and place on oiled half sheet. Add toppings, bake for 10-12 minutes.
Adapted from
https://www.culturesforhealth.com/learn/recipe/sourdough-recipes/sourdough-pizza-crust/
Note: If you forget to start the night before, you can do the first feeding in the morning, second at lunch, and third an hour or more before it goes into the oven.