Although Wentz has not been medically cleared to participate in team drills, he spent time throwing to Philadelphia's assistant coaches and ball boys, NBCSports Philadelphia reported.
Wearing a brace to protect his surgically repaired left knee, Wentz dropped back quickly and fired off passes, showing no signs of the injury.
Wentz admitted he was antsy to return to the field and said he was "confident" in his progress since he sustained a torn ACL and LCL against the Los Angeles Rams on Dec. 10 and missed the Eagles' run to Super Bowl LII.
"Any time you're rehabbing from any sort of injury, you've got to be careful," said Wentz. "There's days you feel great and want to push it more and there's days it's a little sore, it's a little tired, whatever, but it's just part of the process of coming back from an injury.
"You've just gotta trust what the trainers are saying, what the doctors are saying, and keep being smart with it."
Philadelphia head coach Doug Pederson said Wentz remains an integral part of the team's daily routine even if he is forced to be a spectator at times.
"I think with any injury you feel like you might be on the outside looking in, but he's not that type of guy," said Pederson. "He's right in the mix. He's in the quarterback room. He's in the offensive room. He's in my office. We're talking, we're still talking about plays and situations, so he's very much involved, just not going through the actual practice at this time."
Wentz was considered the front-runner for league Most Valuable Player honors before the injury and had to watch backup Nick Foles guide Philadelphia to a 41-33 win over the New England Patriots in Super Bowl LII. Foles also won Super Bowl MVP honors.
The 25-year-old Wentz threw for 33 touchdowns in 2017 to move past Sonny Jurgensen for the most in a single season in franchise history, a record that stood since 1961. Wentz completed 60.2 percent of his passes for 3,296 yards with just seven interceptions in 13 games in 2017.
Although he has repeatedly expressed optimism that he would be ready for Week 1, Wentz said he cannot focus too much on meeting a timetable.
"You do sometimes, but at the end of the day you can't get caught up in that," said Wentz. "Even when you're healthy -- 'OK, Week 1, you've got that circled,' or whatever. It's always just a one-day-at-a-time mentality and approach and especially now I've got to avoid getting ahead of myself."