The recent Oda interview reconfirms everything’s that’s stated in this SBS from Vol 97 that came out in 2019, BEFORE THE PANDEMIC
Oda repeats that the story ends AFTER the One Piece is found (not AFTER a Great War) and the that the goal of the story is now to end within 3 years (which has changed a bit due to the Pandemic)
Exert
How many years until the final chapter?)
--Both of your series have reached their critical junctures together. The identity of the Black Organization's 2nd in Command “Rum” has been revealed, and One Piece has reached the final saga!
Oda: Truly at the start I thought One Piece would end in five years, and in about a year and a half Luffy's crew of ten would have gathered together. I thought of it like a video game but I was far too naive! It's not that I wanted things to keep getting longer, that's just what ended up happening!!
Aoyama: Same, (lol)
Oda: Have you thought to yourself “Okay, It's about time to end Detective Conan”?
Aoyama: This is between us, but I've already drawn the final chapter.
Oda: W—what??
Aoyama: Maybe I shouldn't have said that? I don't want someone to come and steal it, (lol) So as I mentioned earlier, I was in the hospital for a bit once. I got to thinking that people can up and die without warning, so I figured why not draw it? This was about five years ago I think? So I figured drawing the storyboard wouldn't be a big deal, though for now it's a stand in.
Oda: Sure it was just on a whim, but you actually drew it...at least you were able to do it at your leisure?
Aoyama: You could say that, yeah. It wasn't a big deal now because I've already decided on the major details, but there are arcs I'd have to get to beforehand, though..
Oda: How long do you think until the final chapter?
Aoyama: That's a secret, (lol) I might decide to redraw the finale after this, (lol)
Oda: I've always pictured what the final chapter of One Piece would be like, Though from time to time, the situation surrounding it changes. Though really once the One Piece is found the series is over (lol) However, this next saga is the final one.
Aoyama: Seriously? It's really going to end?
Oda: Yup, to me this is really the final arc.
--I'm just going to act this flat out. How many years until the final chapter?
Oda: In regard to how many years it'll be....well, I've given countless different answers so by now I'd have to wonder if anyone believes me anymore, (lol.)
Aoyama: Lol, yeah I think that too.
Oda: I wouldn't yell this from the mountaintops,, but I'd personally like to shoot for 3 more years.
Aoyama: But you don't know for sure. It all depends on how the characters act.
Oda: We're merely navigators in these stories.

Oda repeats that the story ends AFTER the One Piece is found (not AFTER a Great War) and the that the goal of the story is now to end within 3 years (which has changed a bit due to the Pandemic)
Exert
How many years until the final chapter?)
--Both of your series have reached their critical junctures together. The identity of the Black Organization's 2nd in Command “Rum” has been revealed, and One Piece has reached the final saga!
Oda: Truly at the start I thought One Piece would end in five years, and in about a year and a half Luffy's crew of ten would have gathered together. I thought of it like a video game but I was far too naive! It's not that I wanted things to keep getting longer, that's just what ended up happening!!
Aoyama: Same, (lol)
Oda: Have you thought to yourself “Okay, It's about time to end Detective Conan”?
Aoyama: This is between us, but I've already drawn the final chapter.
Oda: W—what??
Aoyama: Maybe I shouldn't have said that? I don't want someone to come and steal it, (lol) So as I mentioned earlier, I was in the hospital for a bit once. I got to thinking that people can up and die without warning, so I figured why not draw it? This was about five years ago I think? So I figured drawing the storyboard wouldn't be a big deal, though for now it's a stand in.
Oda: Sure it was just on a whim, but you actually drew it...at least you were able to do it at your leisure?
Aoyama: You could say that, yeah. It wasn't a big deal now because I've already decided on the major details, but there are arcs I'd have to get to beforehand, though..
Oda: How long do you think until the final chapter?
Aoyama: That's a secret, (lol) I might decide to redraw the finale after this, (lol)
Oda: I've always pictured what the final chapter of One Piece would be like, Though from time to time, the situation surrounding it changes. Though really once the One Piece is found the series is over (lol) However, this next saga is the final one.
Aoyama: Seriously? It's really going to end?
Oda: Yup, to me this is really the final arc.
--I'm just going to act this flat out. How many years until the final chapter?
Oda: In regard to how many years it'll be....well, I've given countless different answers so by now I'd have to wonder if anyone believes me anymore, (lol.)
Aoyama: Lol, yeah I think that too.
Oda: I wouldn't yell this from the mountaintops,, but I'd personally like to shoot for 3 more years.
Aoyama: But you don't know for sure. It all depends on how the characters act.
Oda: We're merely navigators in these stories.
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