The last time the Mets saw the Phillies, their NL East rivals were dancing all over their crushed hearts, celebrating a sweep after the third of three late-inning come-from-behind victories against Mickey Callaway’s beleaguered bullpen.

The Mets have shown some life since, winning two of their past three games against the Braves and Yankees following a seven-game losing streak. They desperately need a big weekend to gain some momentum entering the All-Star break. Returning the favor would certainly help the team with the second-worst record in the National League.

“It’s very important. Hopefully we have a really good weekend here, and go to the break and come back and keep playing well,” Jeff McNeil said. “This time around hopefully we can finish out the games.”

In that four-game sweep last month, the Mets played well enough to win at least two of those games, if not three. They held multiple-run leads in all four games. They were ahead by three runs in the seventh inning in one defeat, three runs in the sixth in another, and two runs in the final game before closer Edwin Diaz’s implosion.

Callaway believes his bullpen, which leads the major leagues with 21 blown saves, will be better prepared this time to protect a lead thanks to the return of Justin Wilson, Luis Avilan and Jeurys Familia from injury. The offseason acquisitions have either been disappointing, plagued by injuries or both. Wilson and Familia were each impressive against the Yankees, throwing one perfect inning apiece.

“We got these guys for a reason and we intend to use them for the reasons we went and got them in the first place,” Callaway said. “These are the guys we knew we could win with. … We’re going to put them in the roles we acquired them for and go out and have a better bullpen. That’s what this team needs, and those guys are going to step up and get it done.”

Familia, signed to a three-year, $30 million deal in the offseason after being traded to the A’s last July, was brought back to set up Diaz. But Familia has had a nightmarish season, pitching to a monstrous 7.53 ERA and being placed on the injured list twice with a Bennett lesion in his right shoulder. The Mets feel the real Familia is back after he worked on some mechanical issues. In his return Wednesday, he struck out Yankees sluggers Aaron Judge and Gary Sanchez, which the Mets hope is a sign he’s ready to put his struggles in the rearview mirror.

“We saw 98, 97 [mph], he stuck a four-seamer in there, some really good sliders and made really great pitches, so it was really encouraging,” Callaway said.

If Wilson, Avilan and Familia can stay healthy and pitch effectively, lightening the workload on Seth Lugo and Robert Gsellman, the Mets believe they can turn it around. This weekend seems to be a good test, against the team that took advantage of their Achilles’ heel.

“Its huge. Every game for us right now the rest of the season is going to be huge, because of where we’ve put ourselves,” Callaway said. “Obviously, it’s the Phillies, it’s in the division, so that’s big in itself. Every game from here on out is going to be huge for us.”