I bought this Adenium plant with flowers about 2 weeks ago. I shifted it from its polythene cover to an earthen pot. It was fine but the pot cracked because it was very crowded. So I changed it to a bigger container with the same soil and also added some new soil. But the leaves are becoming yellow and falling off!. The temperature now is about 37-39 Celsius now here in India and the plant is getting medium sunlight. Please help asap. Thanks in advance.