If you are honestly weighing up a liquid diet against the pain, I also agree that it's time to ask about it.
Generally, liquid diets seem to be used as an alternative to pred as a means of bringing a flare down, then maintenance meds are usually needed to maintain the remission. I found that handling the desire to eat seems to be alright if you are getting enough calories in throughout the day, and kind of 'snack' on it by taking sips when you want. The first few days may be hard, but it's easy after the routine is there.
Just make sure you go to your doc to ask about it, because they should prescribe you a proper shake with all the nutrients you need and monitor you.
I'd highly recommend it though, I had incredible response with it; similar to pred. Only difference is that it keeps your diet in check with less side effects!
