PORT ST. LUCIE — Now it’s real. Following Super Bowl Sunday, baseball will be here.

Mickey Callaway was named Mets manager 105 days ago. After months of planning, he is at the First Data Field complex putting those plans into action and meeting with players who have arrived early.

Callaway watched Jacob deGrom throw a short bullpen session last week and came away extremely impressed.

“He’s a lot like Corey Kluber,’’ Callaway told The Post, comparing deGrom to the two-time Cy Young winner Callaway coached in Cleveland.

That’s a good start for any staff. On Friday, Callaway outlined his “pre-hab’’ approach to keep the pitchers healthy, the key to the Mets’ season, but there will be many more innovations.

Those tactics helped the Indians craft the best ERA (3.30) in the majors last season, an amazing feat since the previous season the Indians took the Cubs to seven games in the World Series. To have that kind of success after a World Series run is stunning because of the wear and tear the long postseason run puts on a pitching staff.

Callaway’s plan, which will be implemented with new pitching coach Dave Eiland, includes building a six-man rotation at times or using more off days to give starters longer rest between starts.

While the pre-hab work will be lengthy, the on-field workouts in spring training will be shorter. Like his managerial mentor Terry Francona, Callaway said he will implement a spring training regimen that accomplishes much in a short time span.

Callaway plans on getting the team on the field at 10 am.

“Depending on the day, I’d like to be off by 11:15, at the most,’’ he said.

That’s smart and efficient.

“We started doing that in Cleveland about five years ago,’’ Callaway said. “Before, guys were sitting around for 15 minutes before their next station. They’re sitting there talking and guys were getting hurt. The next thing you know is you’re tight and they you got to go run.

“I want to get on and off the field. You can’t have standing around; that leads to injuries.’’

Bench coach Gary DiSarcina will organize the camp. All the coaches will be here by Tuesday.

Directly outside of the Mets clubhouse is a bullpen area with six mounds. On the other side of the complex are 10 mounds. The two areas are known as the six-pack and the 10-pack.

In the past, pitchers often worked together on the six-pack, six at a time throwing to catchers. On occasion they would be on the 10-pack, 10 pitchers throwing.

Callaway said he is going to change that. For better quality control, he wants no more than four pitchers throwing at once, so that six-pack will become a four-pack, a slight adjustment that makes a world of sense.

Beyond the pitchers, Callaway must find a way to keep slugger Yoenis Cespedes on the field. Cespedes played in only 81 games last season because of leg injuries. Callaway has had dinner with Cespedes, has seen him at the complex and has enjoyed their time together.

“He seems like a good dude,’’ Callaway said. “He looks different this year, he looks good.’’

Time will tell on Cespedes. He is 32. He needs to have a big year and be a pillar of strength in the lineup, along with Jay Bruce.

The fact that Bruce signed with the Mets is a testament to the relationship he built with Callaway in his time in Cleveland.

“He does things the right way,’’ Callaway said of Bruce. “I picked his brain about hitting and what pitchers should do.’’

When he was with the Reds, Bruce piled up 185 plate appearances against the Indians in their Ohio battles.

“We got to face him quite a bit,’’ Callaway said. “I knew what kind of hitter he was. We really connected, he’s so personable you want to go talk to him.’’

Look for Callaway to build more of those Super relationships now that baseball is here.