I'm terrible at gardening. My neighbour has given DD a cutting of an Aloe Vera plant after she admired their one. However, several weeks in and it is not a happy happy. It's gone from a beautiful, healthy green plant which was quite firm to a sort of brownish colour and a bit squidgy. I don't know whether we are watering enough/too much or too much/not enough sun? What have I done to it? And what can I do to nurse it back to health?