Help My Kitty Whipper Pee Freely Again

Hello friends and family, I am in need of some help. Whipper, my sweet two-year-old kitty, has been struggling the past couple of months... To put it simply, he can't urinate properly and, in turn, gets life-threatening blockages. After many different attempts for remedies and input from several excellent veterinarians, there is a consensus that a surgery, a Perineal Urethrostomy, is his chance for regaining a happy, healthy well-being. Other than his "plumbing" being too narrow, most likely due to a simple birth defect, he is perfectly healthy! This is a rare surgery, so it is extremely expensive, and due to the fact that I am medically retired and have a fixed and limited income, I am humbly asking for your help. Any little bit would be appreciated. Thank you all for your love, prayers, and support. Please help Whipper pee again!