Not quite a whole chapter down, but pretty much two thirds of it done - which makes things look like this:
But I did more than 3000 words today which is respectable.
I'll finish this chapter tomorrow, and I feel perfectly certain that the next one, which follows straight on, will be done by the end of the week. WHich leaves two more chapters for the week after.
Whether that light I see in front of me is the end of the tunnel or just an onrushing train, it's a sight for sore eyes right now...