That's great, Taylor!!! Awesome news!! So glad tests came back negative!
I'm not the best person to offer advice regarding illnesses and such, but my two cents: if you have the space to keep him in QT a bit longer it can't hurt.
I'd probably upgrade his enclosure whenever you feel confident he's eating well and regularly.
But, again, that's just my two cents.
Keep us posted!
P.S. good seeing you around!