Gerrit Cole still has plenty more milestones to hit before the Yankees’ ace is ready to return to the mound, but the right-hander took a step forward on Monday.

Cole played catch for the first time since being diagnosed with nerve inflammation and edema in his right elbow in March.

After making 25 light throws from 60 feet prior to the Yankees’ series-opening win against the Marlins at Yankee Stadium, Cole said it went “great. I felt good.”

He is expected to have two more throwing sessions this week, although Cole was unsure of the exact schedule.

But Cole said it was too early to predict a possible return date.

It’s been a little over three weeks since Cole was shut down and he will need about six weeks — the equivalent of another spring training — to completely build up his arm before he can rejoin the rotation.

He also is not eligible to be activated off the 60-day injured list until May 27.

Still, the Yankees will take the positive news.

“This is another benchmark,” Aaron Boone said of Cole’s throwing session. “The work he’s done has gone well. It’s another important step, but there are a lot more steps along the way. We’re encouraged and hope it builds momentum.”

Boone said he was informed by MLB that Gleyber Torres’ questionable strikeout on Sunday against Toronto was incorrectly called by home plate umpire Angel Hernandez.

The controversy arose when Toronto’s Bowden Francis stepped off the rubber during his windup.

He threw the pitch and Hernandez called it a third strike on Torres.

Boone said he was told it should have been called a quick pitch, which would have resulted in a ball and therefore, a leadoff walk for Torres.