Hi, We have what I think must be a Euphorbia Milii. I has just been flowering and has white flowers. It was recently repotted into a dry terrarium, so we haven't been watering it yet. Now, the leaves are yellowing and falling off, as you can see. Should it be getting more water? If so, would it be good to take it out and put it straight into a jar of water to get some roots going, before putting it back into the soil? Thanks for any suggestions