Let’s make Poki happy again!

Meet Poki, a little white ball of fur I rescued around a year ago.
When we found him, he was underweight (which he is still struggling with), had bloody stools and respiratory issues. I did everything I could to make him feel at home and happy.
Everything settled down until recently, when his raspiratory issues came back.
The doctors put him on allergy meds which don’t seem to help since he still chokes and wheezes all the time. My little happy boy is no longer happy, he is aggressive, anti social and depressed. I know he is in pain and I know he needs a lot of help which I simply cannot afford. And that’s why I’m asking you, kind hearted, animal lovers and warm people to help me out.
Lets make Poki happy again!