Hello, Confused in IL,
I think you have a great idea there, but I admit I'm biased. I'm writing a patient-oriented book about enteral nutrition (the fancy name for liquid diets) in Crohn's disease because it is so rarely offered in the US, and I think people deserve to know about it as a treatment option. As you have already discovered, it's the gold standard treatment in Japan, and is pretty widely used in Canada and the UK, especially for children. It doesn't work for everyone, but you have two excellent points in your favor: new-onset disease, and ileal disease (small intestinal Crohn's responds best to this treatment). Generally if it is going to work, you'll notice a least some improvement within the first 10 days, but totally getting rid of the stricture is likely to take longer. Long-standing fibrous strictures are unlikely to respond to enteral nutrition, but inflammatory strictures (what you probably have, since you haven't had symptoms for very long) can disappear very nicely. Enteral nutrition works best to induce remission if you don't eat any food except your liquid formula (and stick with the same formula). But once in remission, some people use enteral nutrition supplements (say, 500-1000 calories per day) to maintain remission longer, drinking them instead of eating solid food for one meal per day, for instance.
Pretty much all of the enteral nutrition formulas work equally well, although occasionally someone is intolerant of a particular formula. That can't be predicted in advance, but if you start getting bad diarrhea after starting the formula, then just switch to a formula with a different composition. But most people don't have problems.
Some doctors will discourage you from starting enteral nutrition, mainly because they think it is too hard to give up regular food (the largest studies in adults have had big dropout rates). But if you persist, they will generally concede that it is a valid treatment and let you give it a try. The big benefit, as you point out, is that you avoid the risk of drug-induced side effects. Whether it will help your liver or not, I don't know. In responders, enteral nutrition does have systemic anti-inflammatory effects (reduces ESR, reduces production of TNF-alpha, etc.). I've seen a case report of a Crohn's patient with renal amyloidosis (kidney disease associated with Crohn's) who achieved excellent control of both the amyloidosis and the intestinal Crohn's symptoms with enteral nutrition, but to the best of my knowledge, there are no reports on the use of enteral nutrition in someone with Crohn's related liver disease.
Anyway, if you do decide to try this, I hope it works really well for you.