Sally Field boasts a trio of Emmys. With her nominated performance as Tova Sullivan in the Netflix adaptation of Shelby Van Pelt’s Remarkably Bright Creatures — you know, “the octopus book” — she could easily snag a fourth. But statuettes are a lot like being smitten: You never forget your first time. For Field, that came courtesy of 1976’s Sybil. Not yet 30, the actress transformed herself from goofy TV sweetheart (Gidget, The Flying Nun) into a serious and layered performer by playing a woman suffering from dissociative identity disorder — and the 16 multiple personalities that came with her diagnosis. Reviewing the telepic at the…