When in the process of creating pizza dough is best time to put in in the fridge?

Hi, I'll be following this receipt for making pizza dough https://www.frenchguycooking.com/recipe/my-super-legit-pizza-dough There are 2 resting/rising times. First 2h after inisial mixing. Then 6h after forming balls. I want to prepare the balls and keep them in the fridge the day before. When should I do that? 1. Just after mixing? 2. After the initial rising time after forming balls? 3. After letting balls rise for 6 hours? When talking out of the fridge, how long do they need to rise again? submitted by /u/Hooch180