And......
Whether you publish it or not I have found taking daily notes and writing them up at the end of the day to be a great tool for remembering detail. With a smartphone it's so easy to type notes or even voice memos.
On such a long trip days can blur and so much detail can be lost.
Strava/RWGPS offer the chance to record your ride and add photos and notes too. Simple, straightforward and very, very rewarding.
This^^^^^^
I travelled on foot from Mizen Head to Malin Head via Dublin in May of 1989. I didn't make any notes of my journey because, of course I would remember all about it. The years have rolled on and the incidences and experiences have sort of blended together and parts of it are misremembered. Do take notes, even if all you can manage are a few lines at the end of each day.