Sorry you're going thru this. He may be sick...first poop on his vent & now this. Just keep up quarantine. Likely nothing you did & he might have been sick when you got him. Hoping for the best.
I can try the next time I'm in there. I think my presence is stressing him out a bit. He hasn't even seen pellets before, so I'm not sure if he'll accept thoseIf it doesn't stress him moisten a cotton ball in warm water and see if you can remove the vomit from his feathers.
Can you moisten some pellets in warm water and offer those to him?
No, I wish I did, I would’ve set one up for Phoenix a long time ago if I didDo you have a camera you can set up and monitor from the other room?
As long as it's clean it won't do any harm to be honest. Leave it until you clean his drinker.When should I put back plain water? I’m not sure how much(it any at all) he’s drank, could I leave it over night until morning?