Help little bear pass crystals threw his urethra

His name is little bear he’s already battling asthma now he has crystals in between his urethra to his privet and couldn’t pee and was having convulsions that could’ve made him a heart attack so he had to be rushed into animal emergency clinic at 8 in the evening till 5 n the morning I got him ( to add I do live three hours from the emergency room I took him) I paid for 1000 for his last surgery and need help if you can’t donate prays are very much welcomed/needed because they need more tests done they think more is wrong possibly another surgery HES IN A HUGE AMOUNT OF PAIN and it’s scary as heck seeing him pass blood because the crystals (I did call the vet and it’s happens because of irritation) I’ve never asked for help like this before so please help my boy I lost his dad not him I’m 100% willing to post video and pictures and updates about him for you guys and also willing to personally message before any donation is made if you are hesitant about it! UPDATE: he’s been puking less and I’ve gotten some of his meds important ones but his UTI food is a bit expensive per can sense he can’t eat hard food anymore as it will form a full blockage again and it’ll happen all over again