Last I checked, AA had a bottle of Rally. Grab that and give them all a 30-45 min dip in rally - should help alleviate some of the symptoms.
At this point, honestly, it sounds like you just need to be aggressive with all of it and hope they pull through. Raise the Cupramine to therapeutic within the next day. Dose with Metro directly as well as putting it in the food with Focus. Grab an ammonia badge, because you’re not going to get accurate ammonia readings with any test kit. Unfortunately, you’re going to have to do water changes with Cupramine probably every couple of days to keep the ammonia down.
Copper Power + Prime worked well for me, and I was only doing small, weekly water changes. But you can’t use Prime with Cupramine.
While you’re at AA, might as well grab a bottle of Prazi, too. That should get you set for QT.