Vanda watering advice needed

[canyon_md]

I am still very new to Vandaceous orchids and I am realizing that they are not getting enough water. I live in New York, and it is winter, so I've been worried about overwatering, but now I see I have problems.

I've been researching the vase method, which I'd like to try. Or, in the very least, I know I need to soak them rather than spray their roots. I was worried about overwatering, but now I see I underwatered because the bottom leaves are turning yellow on all of them and there is some wrinkling where the leaves meet the stem. One of my vandaceous orchids, with a keiki, has the keiki now dying (all 3 of its leaves are turning yellow).

All this being said - I know I need to do some sort of rescue methods. I've seen in places that I should soak the roots for a long time (24 hours?). Can I soak them in water with MSU fertilizer for that amount of time? Or should I do the fertilizer water first, for a shorter time, and then soak in plain water for a longer period of time?

Any help you can offer is much appreciated. I want to be a better vanda parent and need advice..