Perfect! And each book has 60 pages, there are 6 books, so each one will be for 2 months. It was meant to be.
Then I wondered why, in common with many people, I am drawn to pebbles and stones. For instance, this is one of my favourite mugs.
It is the primaeval, the tactile qualities, the resonance with water, rivers and seas, that makes them so special as if by holding them, we are capturing the spirit of the place and the person who picked that particular one.
So the idea of 'writing a river of stones' has resonances far beyond the practical. And that has to be good. It mustn't be a chore to write a small paragraph every day, but a joy in something held, like a stone, and examined minutely. No doubt with practice, they will be more polished, but it doesn't matter. What matters is the time spent observing, mindfully, of course.