Included with the mod is a json file that allows you to customize the offset applied to Story Progression updates:

The interval_days_lower value represents the minimum added to the interval. By default this is 0.

The interval_days_upper value represents the maximum added to the interval. By default this is 6.

Each time an update runs, a random number between the lower and upper bounds will be added to the default EA interval of 1 day for the next update.