Cindy Crawford is anything but a helicopter parent. During a recent appearance on the “Kelly Corrigan Wonders: About Your Mother” podcast, the supermodel, 58, opened up about parenting her kids, Kaia, 22, and Presley Gerber, 24, as they approach their adult years and how she’s kept any advice she has for them to herself. “They know if they ask me, they’re going to get my real opinion,” Crawford explained. “But if they don’t ask me … I really try hard, and I’m probably about 70 percent good at this … I try not to offer unsolicited advice.” The fashion icon noted how her own mother operated in r…