Help Loki the fluff become happy and pain free

Hi, my name is Vi, and I am here to humbly ask for the support of anyone who is able to help me, help my furry baby boy Loki overcome his battle with incontinence due to damaged spine nerves. His only real chance is to get seen by Dr. Fitzpatrick who is the Dr. House of pets. I have adopted Loki in August 2024. The person I got him from said they can no longer care for him as he is a big boy and needs attention which they can’t offer. Sadly, that was not true as shortly after we arrived home I realised that he is sick. On 21st of March 2025 he will be 2 years old and since he has been neutered when he was 9 months old he is incontinent, dripping pee all the time, no matter what he does ( sleeping, playing, just sitting down). Nobody will insure him as he has records with the doctor for his problem. He is a happy, playful boy and he only wants love. When I spoke with the first doctor I have been advised to put him to sleep as his undiagnosed condition is too expensive for me to investigate and possibly cure. When I took him in and realised that the reason we are his 4th family in less than 2 years of life is due to negligence and cruelty of people, I promised him that this is his forever home and I will move mountains to help him. Another doctor I took him to suggested that he might have feline idiopathic cystitis. After extensive research into this and discussing his symptoms with 2 other doctors and I have been told that the diagnosis of FIC is only put after all other problems have been excluded. I have been told that a scan to his spine and tummy could further help make an accurate diagnosis. Only these scans are thousands of pounds which I can not afford. My desperate call goes out to anyone with a big, big heart, able and willing to help me cure my furry baby boy and keep my promise to him. we will be forever grateful for your help towards helping my Loki have a normal and happy life. Thank you. ❤️