I have some potted lilies that are outside. About a week ago, we received a lot of rain, which we really needed. But after the rain, there was no sun. We haven't had sun for a week now. And the temperature has dropped. And looking at the forecast, we won't have any sun for over another week. I have moved the plants so they won't get anymore rain. My concern is the lack of sun. What should I do to make sure that the thrive through these sunless days to come?