For me, it depends on how much the story talks to me. I tend to do over 2000 words per chapter. Some days, the words come easy. Others I’m staring at a thesaurus trying to decide between one word or the other. To be honest, I began my first novel when I was 16. That was back in 1996. I never finished, and shelved it for many years. Flash forward to last year, when I found my original draft. It still had potential, though not through a 16 year old’s lens. I wrote and re wrote until it became my first completed novel, the Goblin King of Eldoria. So that one definitely took me the longest. Compare that with book two, where I already knew the nuances of the characters. I finished that one in a couple of months, in between working a full time job. Currently working on book 3 now ?