I tested 3 cuttings last year. I ran them each 3 times.
Fertilizer to the very last watering but tapered to plant need.
2 weeks water only
And last week water only.
Yield and potency was affected with a 2 week “flush”
Potency was lower with 1 week “flush
Best results all 3 times fed to the end.
I do water only if they are too green and may only water the last time or two.
If I want to leach pots a low dose of nutes works better to clear out excess as salts attract salts.
Also sometimes looser buds tighten up with proper late feeding for me.
I am a consistent light feeder though. The plants need much less than I originally thought.
That is my experience and opinion.