In Texas’ last five losses, coach Rick Barnes has watched starting guards Javan Felix and Isaiah Taylor struggle. He may not be as patient against Arizona State in Thursday’s opening NCAA Tournament matchup. Barnes hinted that Felix and Taylor could be on a short lease. “This time of year, you got to be doing it or we got to advance [to someone else],” Barnes said. “Right now you’ve got to be ready to go with whoever is getting it done for you.” In Texas’ last five losses, Taylor has shot 28.6 percent, including 1-for-10 and 1-for-14 performances. Felix, who leads Texas in shots taken, has been just 25.5 percent accurate in the five losses. The slumps have been a point of emphasis since Texas’ semifinal exit in the Big 12 tournament. Just as importantly as the misses, Barnes has been upset by the two passing up good looks. “We just been working on the shots that we’ve been taking the whole season, just getting back in rhythm, just open jump shots,” Taylor said. “We know that we haven’t been consistent throughout these last five games, but we’re looking to get that back on track.” Felix said the problems weren’t about fundamental execution. “I feel like it’s more mental than anything,” he said. Another test: Texas saw an array of some of the nation’s best point guards playing in the Big 12. The Longhorns will see another elite player in Arizona State’s Jahii Carson, who averages a team-high 18.6 points and 4.5 assists and possesses a 46-inch vertical jump. “They have a fast point guard,” Texas center Prince Ibeh said. “He gets in the lane, and they shoot a lot of 3-pointers and they make a lot of 3-pointers.”