Matching what others said. DWR will wear off faster in spots with friction (which socks definitely have), but in general doesn’t seem to last long anywhere. Not having the water beads reduces the breathabiltiy of the fabric, which could be why you are seeing moisture.
Renewing DWR won’t last long either, unfortunately. The only place I generally renew it is in area exposed to air (shoulders, arms), as I find this reduces evaporative cooling and helps me stay warmer. I do end my paddles often feeling a little damp from sweat. Means I wear clothing that does fine if a little wet under dry suit (so no cotton).
Because you are damp in both feet, I lean toward it being sweat and lack of breathability, rather than a leak…
Whenever I need a new neck gasket, I always send it back to Kokatat to have it done. Not as fast nor cheap as other places (or doing yourself), but for an added $20 they will leak test and patch the suit, which I have done. Amazing hoiw many patches I have, so it seems some very small pin hole leaks are not unusual.