Are we done yet? Advice for the final push please.

that plant is not done

Get a magnifying glass and check the trichomes have turned from clear to milky/amber then it's ready. What nutrients depends on the manufacturer and feed schedule. Last week or so when ready I just give pH neutral water flush. Hope this helps

wait ... I would wait first .... that is the ready ones ... do not cut everything .. try to experiment technique wake up a plant that still a few weeks tries to give some PK and drink if it continues instead on the ready ones try to keep them 3-4 days in the dark before collecting do some tests .. every truth has its time

You already started the flush i would continue the process. I love to flush my plants good. Harvest when your trichomes are milky with like 10% amber. Cheers!