However, I've been writing lots and watched a lot of films so I read even less than expected. I managed three chapters in the end yesterday, taking me to five chapters for the week which isn't terrible!

Nice! I'm impressed that you more than double your weekly output in a day! :D

Also it's neat that you know exactly what took the place of the reading time, and that the activities of writing and watching films seem to have so much in common with reading in terms of world building, expanding horizons, seeing different perspectives, etc. Sounds like a win overall! ♥