So little update:

Over the last few days since we've been feeding him straight chicken and rice he's picked up so much energy. Now he's constantly happy and evens jumps around.

Tried letting him off the leash earlier and he bolted up the street.... Good quarter mile run for me to catch him.... Definitely an improvement from when we first got him.

Cough is slowly getting better, ten the next step is to groom him and think of a name.