Stressing out over Thanksgiving? Relax. The third of four 2012 CHOW Thanksgiving Helpline sessions on Facebook goes down this Tuesday, November 20, at 10 a.m. Pacific/1 p.m. Eastern. Answering your planning and cooking questions: Lisa Lavery (pictured, left) and Christine Gallary (center), two-thirds of a CHOW Test Kitchen staff that also includes Amy Wisniewski (right). Leave your question here in the comments! Then just swing by CHOW's Facebook page Tuesday to get your answer.