I've recently started writing in a genkouyoushi notebook for practice and I've been writing furigana along with it to reinforce the reading. I was wondering how Japanese writers typically write furigana for jukugo or other multi-character words. Do I write the entire word out first, then write the furigana for all of the characters in the word, or do I write the furigana for each character as I write that character, even in the middle of writing a word?
At first it seemed most straightforward to write the furigana immediately as I write each character, but I found myself saying in my head the reading of individual characters twice and it became hard to think about, so I thought maybe it was better to write the whole word and then come back and write the furigana.
Is there a best practice? Or is it "just do what works for you"?