MILWAUKEE — So much for rising up and forcibly claiming a National League wild-card berth.

The opportunity for October baseball is still there for the Mets, but what could have been a statement weekend and relatively easy path to the playoffs has turned into a stressful slog.

Saturday night the Mets went meekly in a third straight game, losing 6-0 to the Brewers at American Family Field, and moved closer to needing a return to Atlanta for a Monday makeup doubleheader.

The Mets managed just two hits and bear little resemblance to the team that won three of four games against the Phillies at Citi Field to close the last homestand.

In their three games since, the Mets have scored one, four and zero runs.

Atlanta, Arizona and the Mets all began the night tied for the two remaining NL wild-card spots.

Atlanta moved one game ahead with a walk-off victory against Kansas City and Arizona lost 5-0 to San Diego, as the Mets concluded their latest stinker, in which they struck out 11 times against five pitchers.

The Mets own a tiebreaker with Arizona based on winning the season series.

Jose Quintana lasted only 4 ¹/₃ innings in which he allowed two earned runs on five hits with two walks and nine strikeouts.

The left-hander ran his scoreless streak to 25 innings before the Brewers scored twice in the fourth.

Pete Alonso reached second on Willy Adames’ throwing error leading off the second, but Tobias Myers retired Starling Marte, Luis Torrens and Harrison Bader in succession.

The Mets didn’t get another base runner until Marte’s leadoff double in the fifth.

Quintana’s scoreless streak was snapped on Joey Ortiz’s two-run single in the fourth that gave the Brewers a 2-0 lead.

Quintana walked Rhys Hoskins and, with two outs, Isaac Collins to load the bases before Ortiz delivered on a full-count curveball.

Quintana stranded two runners by striking out Andruw Monasterio.

Marte got to third base with one out in the fifth after opening the inning with a double, but Harrison Bader and Luisangel Acuña were retired without the run scoring.

Acuña returned to the starting lineup after a one-day absence with Francisco Lindor inserted as the DH.

Lindor, in his second game back after missing eight straight with lower back discomfort, finished 0-for-3.

Jackson Chourio stroked a leadoff double in the fifth and moved to third on Garrett Mitchell’s sacrifice bunt, ending Quintana’s night.

Phil Maton entered and retired William Contreras without the run scoring before striking out Adames.

Adames delivered an RBI single in the eighth against Reed Garrett after Garrett Mitchell singled leading off the inning and stole second.

Garrett walked Contreras before Adames delivered. Garrett walked Ortiz with the bases loaded to widen the Mets’ deficit to 4-0.

Monasterio brought in two additional runs with a single against Danny Young.

The Brewers are locked into the No. 3 seed for the postseason but have shown no signs of letting up in the first two games of this series.

The Mets fell to 0-5 this season against the Brewers — a potential opponent if they reach the postseason.