I need help with my sick orchid

[Im Just Saying]

Hector don't fret about killing them we've all killed our fair share in the learning process haha. In response to your question watering depends on what you have them potted in and what your environment is. I would have to say that for many mediums 2-3 weeks is not often enough. What is your phal growing in? Can you tell if the entire pot is filled with sphag or is it a bark-like mixture with sphag moss on top? Sphag and bark have different water retention levels and should be watered accordingly. With that being said it is much better to underwater than to over water in the case of phals. If you have a hard time gauging when to water I highly recommend the skewer method (you can use either wooden shush-kabob skewers or a pencil). You simply stick the skewer into the pot near the middle taking care to not puncture the roots, leave the skewer in for 10 minutes. When you pull the skewer out check to see how damp it is (I usually place it against the skin on the inside of my wrist). If it is damp you should wait a couple more days before watering, if it is cool or on the dry side its time to water.