Please help yoda

Hi all firstly thank you for clicking and reading this desperate plea for help. Yoda is my 14 year old autistic sons cat that is trained as his emotional support animal. Yoda is only 8 years old and in the last 2 years has suffered a blocked bladder 3 times and is now in desperate need of a perineal urethrostomy surgery which will save him. He is registered with the PDSA but they only provide the unblocking surgery 3 times max and he has had it 3 times, meaning after this if no surgery is given, he will be PTS the next time he gets blocked. We have and are doing everything and anything, exhausting all finances and our sanity to get this surgery for him. If we can get this surgery and there is leftover donation funds then all will be donated to a local cat charity and proof will be given on the local T.A.L.C group on Facebook.