Unknown Vanda Orchid- brown roots shriveling leaves

[LaosyOrchid]

Hi everyone,

I'm new to Orchids and especially Vandas. I live in Laos and right now it is HOT season- mid 90s every day with no rain and about 60% humidity. To account for this I've been soaking the roots of my Vanda 2x per day for about 30 mins. Over the past few months this Vanda has gone from growing new roots to no growth and leaves shriveling. I did have to pull them off my porch because I believe the sun was hitting them directly causing some sunburn. Anyway, take a look at the pics and let me know if I should be doing anything different.

Thanks!