Stir in rice; season with 1½ tsp. salt. Cook, stirring often, until some of the grains turn translucent around the edges, about 3 minutes. Add wine and cook, stirring often, until pan is almost dry, about 2 minutes. Ladle in 1 cup warm stock, bring to a simmer, and cook, stirring often, until liquid is absorbed, about 4 minutes. Ladle in another 1 cup stock and continue to cook, stirring yet again, until most of the liquid is absorbed, 5–7 minutes. Add remaining 1½ cups stock and cook, stirring often, until rice is cooked through but toothsome and liquid is mostly absorbed, 9–11 minutes longer. Remove from heat. Stir in Parmesan, cream, lemon zest, lemon juice, 1 tsp. pepper, and remaining 2 Tbsp. butter. Season risotto with salt.