I think my cat is slowly dieing is there anything I could do ..how much is it to put him to sleep..

I sincerely hope you haven’t gotten another pet since you posted this question.

TAKE THE POOR CAT TO SEE A VETERNARIAN NOW❗ WHAT ARE YOU WAITING FOR ❓

What is wrong with you? You can take to low cost or compassionate pet. If you really can not afford the animals suffering come up with under $50 to surrender your animal. He could have parasites. He could be depressed or in mourning. How old is the cat? Look just go surrender the cat for like a donation and let them care for the cat and if they see fit to put the cat to sleep. I will go hungry, beg, borrow, sell what I can just to take care of my pet. Figure it out dear. If not try to animal organizations take 90 minutes. Write your print every cat organization within reasonable distance. Start calling and leave a short to the point message name and number.