Since you did so well with just a few days of liquids, maybe you could try a diet of 1/3 or ½ liquids, with the remainder regular foods. Perhaps it would be enough to keep you in remission.
You are welcome. It's a subject I know well, since I wrote a book about enteral nutrition for people with Crohn's in the hope of making more people aware of this treatment option. (The book is available in the Healingwell bookstore under Crohn's disease.)
There are a bunch of different products. As vixen has already said, you can drink it or use a tube leading to the stomach or small intestine, whichever you prefer.