Just wanted to say I'm sorry to hear your kitty is having troubles again, and wanted to let you know that my Nanna's cat Puss was diagnosed with urinary tract issues and put on a special diet and lived very happily and healthily for another 8 years (and he was 11 when diagnosed!), so I really hope a diet change is all he needs to have him fixed up and back on track! Good luck hun, I'm sorry I can't remember what food Puss was on but I do remember Nanna being very worried that he might have to be put to sleep and he was still kicking years later - so not all bad news!! Hope you can find something that works for your little fur-dude! x