I was going to say ‘disinterestedly’ but that’s too self-aggrandising. ‘Distractedly’ is probably more apt. Write a sentence, pace around the house. Look up a reference, end up rereading half of Vainglory. As I think I’ve mentioned before, figuring out all the details is OK, but the execution is where I start to lose interest. Once I see it’s going to do what I hoped for, I get sidetracked again and start working on something else.
After that, work progresses in infrequent dribs and drabs. Even trivial pieces can have a longer gestation period than Ulysses. There’s no sense of anticipation when a piece is nearing completion, either to hasten or delay the end. The work continues indifferently, in small increments until, quite unexpectedly, there’s no more to do. Like absent-mindedly munching on crisps until you dip your hand in one more time and realise you’ve finished the bag. You weren’t even all that hungry.