The Yankees will hold their organizational meetings beginning Monday, with general manager Brian Cashman and his staff trying to figure out how to get the team deeper into the postseason — and get by the Red Sox in the AL East.

The front office no doubt will explore options to improve the rotation and make additions to the bullpen as well as looking at potential replacements at shortstop while Didi Gregorius rehabs from last week’s Tommy John surgery. Cashman, however, is also aware of how quickly he may have to pivot — no matter what his plans are.

“Things can change at any time,” Cashman said on Saturday.

He needs to look no further than a year ago, when much of the organization’s focus was on how to convince two-way star Shohei Ohtani to come to The Bronx from Japan.

But when Ohtani ruled out all teams east of the Mississippi and eventually went to the Angels, Cashman changed direction — and ended up trading for Giancarlo Stanton in December.

Asked if the possibility of trading for Stanton even came up when Cashman held these meetings at this time a year ago, the GM said, “I don’t recall. His name became very prominent in trade talks later in the offseason, when the Marlins decided to do what they did.”

That’s when Derek Jeter, in his new role as Marlins CEO, decided to send Stanton and his giant contract packing.

With $295 million remaining on Stanton’s deal and a no-trade clause, Jeter’s options were limited, so when Cashman got the news that his team was out of the Ohtani sweepstakes, the Yankees became an option for the Marlins slugger.

“In November, the Cardinals and Giants were involved and we had discussions about it,’’ Cashman said. “You never know what’s going to happen to the landscape.”

And when Stanton stared down Miami and refused to go to St. Louis or San Francisco, he eventually was dealt to the Yankees.

Now that Gregorius is out for at least a significant portion of 2019 following elbow surgery, the Yankees’ offseason outlook is altered from where it was just a couple of weeks ago. Gregorius apparently suffered the torn UCL while making a throw in Game 2 of the ALDS at Fenway Park.

Cashman already has said Gary Sanchez will remain the starting catcher and there are other jobs locked down, such as Aaron Judge in right field and Gleyber Torres at second base — unless he is asked to shift to shortstop in Gregorius’ absence.

But the battle between Luke Voit and Greg Bird at first could be altered by another move and Manny Machado’s impending free agency may also play a role in the Yankees’ plans.

“Options may develop during the offseason,’’ Cashman said. “It’s Voit’s position to lose and Bird’s to take back. Bird’s ceiling is still his ceiling. And we’ll see if anyone else pushes in as an alternative. … The great thing about baseball is you always have a chance to change the narrative.”

In the meantime, the Red Sox are back in the World Series for the first time since winning it in 2013.

“They have a good thing going on,’’ Cashman said.