Making a graphic novel is no quick task. On average, it could take anywhere from nine months to a year and a half. It depends on factors like the complexity of the story, the artist's speed, and the level of detail required.
The time to make a graphic novel really depends. If you have a clear story and a skilled team, it could take around six months. But if there are lots of revisions and complications, it could stretch to two years or even longer.