I don’t there’s a chance it will take up less than a season. The pacing is so slow that it may be even longer than a season. I see the backstory taking up the 2nd season and ending at least hopefully at the main point then there will be optimistically half a year to a year break and the backstory will continue on in the 3rd season, either till the end or near the end. This will be a first story where backstory takes up more than a main story.

Another day, another quick scrolling though story and hoping the flashback finally ended