For Jamal Crawford, learning how to be effective in the playing time he’s been given has been a challenge. Crawford, three-time NBA Sixth Man of the Year, signed a two-year, $8.9 million contract with the Wolves last summer. Through 29 games the guard is averaging 17.7 minutes and 8.9 points. It is the first time in 17 seasons Crawford has not averaged in double figures in scoring. And his minutes are his lowest since his rookie season. “It’s a difficult challenge,’’ Crawford said. “Because this is the lowest minutes I’ve played, pretty much the same minutes I played as a rookie. So you want to actually do it the right way, and play within the framework of the game. But then, if you’re not out there that much, you kind of have to make something happen. So it’s a balance I’m trying to figure out.’’ So far Crawford is shooting 39.6 percent overall, 34.3 percent on three-pointers. When Crawford, 37, was asked if he sees any advantage to playing fewer minutes, he said, “To be honest with you, I don’t.’’