I'd work on the area immediately around the nem to start. Getting rid of algae and down to the bare rock all around it. Then every day expand from there treating the algae/dinos like a slow fire that I'm protecting the nem from. It will thank you. They don't like algea touching them ime. I'd watch flow in the tank to see how dinos from outside this area might hit it although I'd probably not do much there as the nem will move for flow..but it might help focus my cleanup to those areas first. Good luck. You've got a beauty there
