Oh no!!! My kalanchoe tomentosa leaves are dropping
It might be the humidity! Try keeping it at low to medium humidity, around 20% to 40%.
It's always a good idea to check the soil to see if it's dry or too moist, and look for any puddles. If it looks dry, try changing the watering schedule. Another thing you can do is move your plant to an area with indirect light. The temperature should be around 65-75 °F. It's also a good idea to check the leaves for pests like whiteflies and spider mites. You can find them under or on the surface of the leaves. If you do find any, try treating them with insecticidal soap or neem oil.