I need advice withowt having to go to the vet..i think my rabbits dying..?

i have a 3 year old pure bred lop eared rabbit. he is not eating its soo sad to see ive tried everything...i live owt the country and itl take me an hour and a half to get to the nearest vet... ive tried to give him human food such as cooked veges..and fruits...also i have tried to give him his daily nutrients and rabbit proteins but its just not working...please this rabbit means the world to me and i know if i cant help him im gonna have no choice but to take him to the vet..but is there eni other way around this without having to resort to a hour and a half drive... my rabbits name is "Muff Muff"