BOSTON — Start small and think big.

There’s your solution to the Yankees’ early-season misery.

The Yankees’ offense woke up Sunday night at Fenway Park against David Price, so naturally, their pitching fell apart, with Nathan Eovaldi, Ivan Nova and Dellin Betances teaming for an 8-7 loss to the Red Sox, a series sweep by the home team and the Yankees’ fifth straight loss, giving them an overall record of 8-15. Brutal.

You want a repeat of 2005, when the Yankees enacted a series of changes on May 2 with an 11-15 record? Of course you do. That now exists as the gold standard of in-season reboots. The Yankees recalled Robinson Cano and Chien-Ming Wang from the minor leagues — they also enacted a few other changes (Tony Womack from second base to left field, Hideki Matsui from left field to center field and Bernie Williams from center field to part-time designated hitter) that didn’t stick, although no one remembers that part — and finished a stellar 95-67, winning the American League East.

Don’t anticipate such a revolution this time. That’s because those moves resulted from an actual revolution of sorts. General manager Brian Cashman, much of his roster put together by people besides him, received the green light from George Steinbrenner to clean up things however he saw fit. Cashman put together the bulk of this 2016 group, however, so he won’t be as desirous to blow it up.

With that in mind, here’s the road map to a subtle yet successful rejiggering of what we’ve seen so far, beginning with the easiest stuff and working up to the hardest:

1. Bench Chase Headley for Ronald Torreyes. This won’t require so much as a roster move. Headley, signed with the Yankees through 2018, owns a .423 OPS this season. Consider that CC Sabathia’s career OPS is .551.

Is Torreyes a long-term solution? Of course not. For now, though, put in a guy who will give you a consistently competitive at-bat. Headley, who went 1-for-4 with a single Sunday night, has not met that low bar.

2. Put Luis Severino on double-secret probation. These Yankees, like last year’s Yankees, are walking the tightrope between transition and contention. It wouldn’t necessarily make sense to trade prospects or take on a big contract.

Yet if the prized Severino can’t keep the Yankees in games, then he must return to Triple-A Scranton/Wilkes-Barres, where Luis Cessa and Chad Green — the two pitchers the Yankees received from Detroit for reliever Justin Wilson — both have performed well.

Severino will start the Yankees’ next game, Tuesday night in Baltimore. His last start, at Texas, wound up as his worst, as he lasted just three innings and allowed six runs.

“He’s never [gone] through a stretch like this,” manager Joe Girardi said Sunday afternoon. “For him, that’s why I talk about just ‘Pitch by pitch. Slow it down a little bit.’ But he did show the ability to make adjustments last year, when he was struggling.”

3. Give fewer at-bats to Carlos Beltran, Alex Rodriguez and Mark Teixeira. Yes, even after A-Rod’s four-RBI outburst on Sunday night.

There is reason to believe that the more rest the Yankees’ three senior citizens get, the more effective they’ll be. A-Rod conceded late Sunday that he benefited from two recent days off to rest his left oblique. Girardi made the right call Sunday not starting the switch-hitting Beltran, even though it meant starting lefty hitters Jacoby Ellsbury and Brett Gardner against Price.

Aaron Hicks, who is vastly superior to Beltran on defense, must get regular opportunities, and Dustin Ackley should get a chance to prove last September’s outburst meant something. And if any of the trio of elders gets banged up, the Yankees shouldn’t hesitate to put the player on the disabled list to recharge the player’s batteries and give themselves (and us) a look at minor league outfielders Ben Gamel and Aaron Judge.

4. Solve the Ellsbury problem. This might be unsolvable, what with the center fielder in the third year of a whopping seven-year, $153 million contract. At the least, the Yankees can alert the baseball world that Ellsbury, who doubled twice Sunday, is available at a heavy discount and see if someone bites.

None of this can equal calling up an all-time Yankee (Cano) and a groundball machine (Wang). It’ll help, though. At this juncture, would anything hurt?