She and fellow band member Kristian Bush were about to perform at a state fair last August when a storm tore down the scaffolding. Seven people died and dozens were injured.
The company that built the stage is now facing lawsuits and lawyers requested Nettles and Bush to give their depositions next week. Instead, a judge ordered only nettles to testify next month.
The testimony will focus on whether the band resisted delaying the start of their concert despite threatening weather.
The Associated Press contributed to this report.