Nice looking plants...
However, I say you are weeks away! Hairs need to recede back into bud, or at least start to recede... I'd wait, buds will change/grow wait!
Now, in my opinion, you have started to use "ONLY" water too soon ! If plants take another three weeks to finish, are you going to 'feed' them only water for the next three or even four weeks?
You've done so good till now.... Don't f them up by starving them the last four weeks of their life? They will wilt, turn yellow, and look like they are dying, if you continue....
Or, you can wait P-A-T-I-E-N-C-E.... wait for hairs to recede... then re-check for trics....
FYI: [on a healthy plant] Plant will make clear trics until the day you pull it....
As plant dries, some clear turn milky....
Some even milky ones turn tea/amber colored...
Amber/Tea colored = degraded THC....
You want as many [as high a %] milky/white ones as possible...
Now don't say you have a few amber or a few clear ones... you ever cut into a nice bud, then look under a loop at it?
Billions of Milky Trics.... BILLIONS.... with a B....
That's what you want.... a milky THC Highway....
Good Luck!