Of course you want to be in remission right now! That's so understandable. Everything you are feeling is entirely normal and reasonable. It's definitely worth sticking with the diet for another week at least to see if you start feeling better though.
Has your doctor done any tests yet? Because inflammation can begin to reduce in as little as one week of treatment so if you saw that in the numbers you might be encouraged to continue.
Remember that the liquid diet has great benefits over steroids - not just the absence of side effects but it is better for mucosal healing which if achieved gives a better long term prognosis.
And I think if you went with steroids you might well be feeling very similar things - that you wish you'd chosen the other treatment path, that you wish you were back to health already and that the steroid treatment was over. Basically you just want to feel like you again with your normal life and sadly that can't happen overnight - but hang in there.
You're one week in and that's really great. I think you can do this.
Did you decide to go with 10% normal food? Is that helping?
If you really hate the taste of this formula, is swapping to a different formula possible?
And if venting about this gets you through it, then vent away!!
Btw when I drank Elemental 028 (which is definitely an acquired taste) I used to always make sure I did it while reading, watching tv or being on the internet. In time I came to associate as something positive, not just because it made me healthier but also because I got to take study breaks and do something relaxing while I drank.