It’s important that the dough chills a minimum of 2 hours, or preferably overnight, to get the best texture. Without adequate chill time, the cookies will spread more and not be as thick as they should be.
You can also pop the dough in the freezer for about 30 minutes to expedite—flip it over once for even chilling.
You don’t have to bake these all at once— bake some the next day and you will see how the texture changes as the flour is fully hydrated.