In that case, you might be better off thinking about the number of telecommuting days per month, not per week. In any given week you might telecommute as few as one day - or not at all - or as much as four days. The trick is to work where you work best on any given day, depending on your workload and your personal preferences. A monthly average of eight to twelve days still works out to two or three days per week, but thinking in terms of the entire month gives you much more flexibility.