Jamie-Lynn Sigler is trying out something new.The actress revealed on “Not Today, Pal,” the podcast she co-hosts with former “Sopranos” costar Robert Iler, that she’s undergoing a “milk cleanse” – for eight days, she’s forgoing solid food and only drinking whole milk.In a conversation about food with Iler and comedian Mike Cannon, Sigler said, “You guys should hear what I’m doing right now, you’re going to think I’m crazy.”“It’s shocking,” she admitted, “because I too love food, I too love sweets – I am in the middle of something called the milk cleanse. All I’ve been drinking for days is whole milk.