Plan one leg at a time
Enter the days between the towns or laundry stops you will actually use. A desert leg and a rainy leg dry very differently, so run each one.
Try the slow-drying case
Run the same leg with a longer drying time. If the plan runs short, carry another pair, wash earlier or wear pairs longer.
Camp pair and worn-out pairs are separate
The pair you keep dry for camp is not a walking pair. Replacing a worn pair is a separate decision; a guarantee claim takes time and an address, so plan replacements in town.
Write down the exact model
Note the style number and size of the pair that works. A similar name or a new version can have a different blend or fit; check the label on the replacement.
Check again when something changes
A new shoe, insole, season or sock changes the fit. Try the new setup before a long leg.