Not a lot went right for the Jets’ defense in the first three weeks, but the bye week was much better, defensive coordinator Gregg Williams said.

Sure, you can joke about not giving up any points or blowing any coverage assignments, but Williams had his team do some heavy evaluating before returning to work this week.

“One of the things that we do and started doing a long time ago — coach [Bill] Belichick and I talked about this back in the early ’90s, got the idea from him — but the player does a self-scout on himself,” Williams said following practice Friday. “We do that every four weeks anyway, so this was good timing. I did it back in the spring, too, so this is the first time since the spring I’ve had them doing it, so they’re familiar with their report and what they had to do.”

Williams said the team took the assignment seriously, and he was impressed with the details they included. He said the coaching staff takes these reports and uses them to better communicate with each player.

“Their self-scouts were outstanding, brought smiles to my face,” he said.

The longtime coordinator in his first season with the Jets views it as a collaborative effort between the staff and players, allowing Williams not to “labor over some of that stuff.”

But when the players left for the bye week, Williams said he stayed at the team facility and did some behind-the-scenes work, including more self-scouting.

“They’re telling us, ‘Hey, I want help,’ or, ‘Hey, this is what we need, this is what I need,’ ” Williams said. “It does change a little bit of what we do in individual drills, what we talk about in the meetings and then what we card up for a picture because we want that person or these particular persons seeing some of the things that they’ve identified for us.”

Before the bye week, head coach Adam Gase had the team watch film together — instead of by position group — to pinpoint mistakes that needed to be corrected. It was a specific strategy to get the whole team on the same page.

“It’s just something that I’ve been a part of,” Gase said. “A couple head coaches have done it like that, to where you’ve got that little extra time with the bye. You want everybody to feel as though each side of the ball is being held accountable in the same way. To where defenses aren’t going, ‘Hey, what are they doing over there?’

“So, they kind of hear our guys coaching and then our offensive guys kind of hear how defense are doing it and how [special teams coordinator] Brant [Boyer] is doing it. So, it’s a good way for everybody to be on the same page.”

Along with QB Sam Darnold, LB Jordan Jenkins was also ruled out for Sunday’s game against the Eagles. Neither LB C.J Mosley (groin) nor G Kelechi Osemele (shoulder/knee) practiced outdoors with the team, but both worked inside the facility Friday.

DE John Franklin-Myers was placed on injured reserve with an undisclosed injury.

WR Demaryius Thomas (hamstring), WR Josh Bellamy (shoulder), DL Quinnen Williams (ankle) and TE Daniel Brown (ankle) are also questionable for Sunday.

RB Trenton Cannon (hamstring/ankle) and LB Tarrell Basham practiced fully for the first time all week.

The Jets claimed OT Connor McDermott off waivers from the Bills and cut DL Bronson Kaufusi.