Decide how many days you wear a pair
Some hikers change daily, others wear a pair two or three days. That is your choice, not something the fiber decides; enter it in the planner.
Mark the days you can actually wash
A creek rinse, a hostel sink or a laundromat in town each count. The planner washes the pair at the end of the day you mark.
Use the advice on care between laundry stops to handle liners, double layers and membrane socks the right way.
Give the pair time to dry
Enter how many hours a washed pair takes to dry on your trip, then try a slower case. A pair that is still damp in the morning is not a walking pair.
Keep the camp pair out of the count
The dry pair you sleep in is not a walking pair. The planner keeps it aside and shows a shortfall instead of quietly using it.
Liners count separately
If you change liners more often than outer socks, plan them as their own rotation with their own drying time.
If a spot starts to rub on the trail, the blister guide has the routine.