Gurl I have ADHD too, the trick to read novel is to play a music in the background and read. It helps me out a lot. You need to find your own music that helps you to calm down and shut the constant voices and thoughts.
I have 2 playlist for reading, one is kpop or foreign language songs and the other is soft piano music. Give it a try and makes sure your playlist is like 3 hours long or something so that the songs are not looped cause that can break the concentration

Uhmm i ain’t reading 900 chapters my adhd won’t allow me. Will the artist continue with this series? or it’s dropped?