I acclimated him for about an hour but I don’t have a drip setup so I just poured a bit of water into his bag. I hope he perks up soon.
Adding more water to the bag is the same way that I acclimate them.
I will usually double the volume, then dump out half, and then double the volume again.
I also do a fresh water bath for 5 minutes with heavy aeration.
It is crazy the flukes and stuff that can be left in the fresh water when you are done.
The orchid looks like it's breathing heavily.
Google fresh water baths/dips.
The first time was traumatic (for me, not the fish) but after that they are effortless.
Catching the orchid and giving it a 5 minute bath might help with anything on its gills.
I'm guessing you didn't quarantine?
A lot of people don't. But a fresh water bath should be a minimum.
A good quarantine protocol would be even better.
(From another guy who never quarantined for years. A few bad tank wipeouts helped me change my mind. [emoji53])