My guess is Blooming Rosy Swirl Orchid Cactus (Epiphyllum)
Actually Epiphyllum set buds from cool temperatures !!! 40°F to 60° F for 6 to 8 weeks & the soil should be dry to touch before watering again , Water with 1 teaspoon of Epsom Salt to 1 gallon of water ( NO Fertilizer until buds are visible), the Epsom Salt solution aids in budding.