Please help Kiwi :(

My poor baby kiwi's bladder is blocked with stones and he can't urinate. I need to get him surgery which costs $1800.00 before his bladder ruptures. This is life threatening. I just spent every penny I had on his vet costs to find out he needs this surgery. Anything helps as this breaks my heart to see my little guy in so much pain. I want my kiwi home safe with no pain I am doing everything I can :( I'm so very attached to this cat I have had him since birth and I cut his umbilical cord when his mother didn't do it. I can't imagine my life without him