I've raised £391 to Help princess get the right diagnostic!! To save his life before it’s to late

Princess is one of my stray (1/12) who I have rescued got neutered and treated if neeed , I have adopted him and he is one of my eight cats living with me !! He’s around 10 years old and only has one eye , he’s currently having breathing problems ive taken to the vets he has water the lungs which am treating him for but the vets have also said he could have asthma , heart failure , heart murmur , and a few other problems he needs a x-ray to get him on the correct medication before it is to late , I have spent £800 in the last month at the vets on two other cats so im really strugging , sadly if i dont get him treated in the next month it will be to late to save him !! hes been a stray for the last 10 years of his life im asking people who are animal Lovers to just donate £1/2 to save his life !! Hes had a awful life and i just want to make hos last few years as comfortable as possible hes only got a few years left as this condition shortens his life
if your a cat lover please help me 💕💕💕