Now that we're in the final saga I have feeling Oda will fumble it. He seems in a hurry and that's not a good thing.
I understand though, he has been writing the series for over 25 years and just want to be done with it.
This is very scarry, rushed plot, I fear that One piece will end like Naruto/Bleach or even worse, since both Naruto and Bleach had at least 200chapters alone for the "final war" arc. And we are supposed to end everything around 3-4years? That is like 120chapters, Oda should stop forcing himself for make such states, it is kinda annoyiing at this point.
Just focus on your story, don´t cut something out after you spend 25years for all the build up.
I hope he not mess it out, 5-6years are need to make a good story, we could get each year 33-35chapters, in 6years it would be 210 Chapters. Perhaps enough to end all the stories like Elbaf,Vegapunk,Loadstar,Weevil plot,Kid plot,Shanks plot,Blackbeard plot and ofc void arc who is linked to the final war.