Urgent help needed!! Last weeks of flowering & root rot dwc grow

Plan was to switch over to plain water for the last week or two. I ended up getting stuck out of town for a few days and what I had thought was just coloring from the nutes the week before, now looks more like root rot. The plant even has a few leaves that are dead.

As soon as I noticed this I switched to a 5 gallon bucket, used new airstones and tubing, plain ph'd water with some peroxide.

Before I made the fulll transfer I had another bucket of ph'd water that I dunked the roots in to try and rinse as much crap off as possible. I did this twice to be safe.

My question: How much do I have to worry about this right now? Is it even safe to try and flush the plant for two weeks at this point? I'm so close to the end and I don't want this all to be a waste.

Ya can just let it roll. They are done and ya cant do shit if they did rot. Perhaps its just nutes on the roots. Nutes will discolor them.