Giancarlo Stanton is closing in on a month since he sprained his right knee on an awkward slide in a win over the Blue Jays, and the Yankees are no closer to knowing when the slugger might return.

“It’s better, but still slow,’’ Aaron Boone said of Stanton’s recovery before the Yankees lost to the Rockies on Sunday, 8-4. “He’s not doing baseball activities yet. He continues to work on stabilizing things to get the quad built up and strong.”

Stanton has received treatment at Yankee Stadium, where he remained during the homestand, but he has played in just nine games this season, bothered by biceps, shoulder and quad injuries before sustaining the June 25 knee injury.

“It’s moving slow, but in talking to him, he feels like he’s making progress,’’ Boone said. “The first couple of weeks were a little frustrating.’’

The Yankees have done just fine without Stanton, thanks to contributions from outfielders Aaron Judge, Aaron Hicks and Brett Gardner — although Gardner missed Sunday’s game with left knee soreness.

And they’ve also got production from unlikely sources, including Mike Tauchman, who homered again Sunday and is 9-for-19 with two doubles, two homers and four walks in his past eight games. He has remained on the roster with Clint Frazier at Triple-A Scranton/Wilkes-Barre.

Cameron Maybin could return soon from a strained left calf. He is scheduled to begin a rehab stint with SWB on Tuesday in Columbus.

— Additional reporting by Greg Joyce