Newly "saved" orchids, in trouble again

[dawsonrose]

Hello everyone!

As a new member of the community, I first want to say hello to everyone! Happy to find such a fun and informative page.

My question is, I have sadly ruined two of my orchids over last fall due my impatient overwatering / wrong potting medium. Then, over a tedious upside down rooting period, I finally got a lot of roots and two new leaves on my orchid. I have potted it into bark over three weeks now but its been looking a bit sad as leaves started to yellow. The photos are attached. I am suspicious of lack of water as the bark is pretty new, maybe it dries out too quick? I am never sure about the watering now, and afraid of overwatering again. I rely on the gray roots, however they turn gray even though the pot has visibly moisture still. What would be your suggestions to me? Thanks and greetings!