Your instincts are spot on. Start the flush with next feeding. Only PH water to the PH you’ve been using. Typically indoor with nutes in soil 2 week flush. Coco 1 week or so and hydro is a few days to a week as the plant intakes at a different rate.
Don’t change anything else to the conditions. The plant will change how it’s it producingthe air inside so expect changes but don’t freak out. Just watch the humidity to ensure no Last minute mold.
They look good!
The added amber hue from the trichomes should add that couchlock or body response. The later in the harvest the heavier the high and body feel as youre basically aging the trichomes. The earlier can cause a more uplifted mental high.
-Swift