I think you're slightly delayed due to excess Nitrogen and/or salt buildup. I see the signs of that on the leaves and also the leaves on your plant should be turning yellow and possibly other colors by this point in the game but I feel like they are unnaturally green. They are too far out from finished to stop feeding them altogether. So flush and then also feed with a light bloom nutrient solution. Allow them to dry then return to feeding them until you see them nearing their finish.
You determine finished by clear/cloudy/amber ratios of the trichomes but you tell the plant is mature when 50-70% of the pistils have turned color I think, you can Google that. Mature doesn't mean all the resins are done forming there is an optimal window to take a plant to have the most resin but at that point it is an up, energetic high and I tend to lean toward specs of amber in my OG. Although I like the cloudy only buds too it's a slightly different experience so maybe try both.
P.S. Totally lost my train of thought. Get second opinions and Google before just taking my opinion because I am looking at a little picture on my monitor plus I am ridiculously high right now.
