Help Marty overcome FLUTD

My 7 year-old cat Marty is suffering from Feline Lower Urinary Tract Disease. He has had three emergency trips to the veterinarian hospital and clinic this month, due to a blocked bladder and currently hospitalized. He is a domestic shorthair/maine coon mix, so he is predisposed to this condition unfortunately. I am unable to afford future bills and believe without help I cannot get him to live much longer. Please help my boy get better. This is to cover his current costs and any future visits.