Vanda Care

[SP2340]

Hello. I bought 3 Vandas about 6 months ago. One died, ones hanging on and the others fine. The one that is sort of still alive was exposed to direct sun for about 2-3 hours as the sun got low, which is why I think it's in its current condition. But I've been spraying the roots daily and fertilizing once a week. I live in South Florida which it's currently 80 degrees and 80% humidity. The one that's doing good is not giving me flowers. Should I fertilize more often or water twice a day? Their my favorite orchids and I hate to see them strugling. Thank you very much for your suggestions.