ALLEN PARK, Mich. — Trying to right a sinking ship, the Detroit Lions are making more changes coming out of the bye. Not surprisingly, coach Dan Campbell isn’t willing to share any of the schematic or personnel adjustments ahead of Sunday’s game against the Dallas Cowboys, but the coach revealed a key change to the team’s practice routine he’s hoping will improve the team’s performance. “We’re going to go back and do a lot of things we did in camp, just to prepare,” Campbell said. “That was one of the things that came out of (the bye), be much more competitive in practice. We’ll get back to so…