Earl Grey's Mom here:
I just talked to the vet. He has to stay another night. His ALT value (a liver enzyme) is down to 481 (from 1076). It’s still high (it should only be 120 max), but it’s improving. He won’t eat on his own yet, so they’re still syringe feeding him every 3-4 hours. They’re going to recheck his liver stuff tomorrow at 4 to make sure everything is still headed in the right direction. We're still praying hard that he starts eating and his liver goes back to normal. Thank you all for keeping us in your thoughts and prayers. This kitty community is just so super. I'm going to visit him tonight and will make sure to tell him that you all are pulling for him. Thanks again!