First liquid/elemental diet maybe?

Hi.
I'm in 10th grade, used to have remicade, stopped working, so was put on cimzia. Cimzia helps but not enough. It's better than going with no medicine at all but still I get pains. I have a checkup with the gi doctor in early january. Christmas break is comming up. The only break I will get for a long time. It is 2 weeks long. And I was thinking, since I am still pretty short and skinny, I could just drink nutritional drinks for 2 weeks, maybe 3? I only want to do it during christmas break because it would just be kind of weird not eating during school at lunch. Only my close friends know that I have crohns And I don't want to explain myself to 100 kids. I know, I still could ignore them, but I just don't want to take that route.
Anyway, usually these diets are 6 weeks, right? Is there even a point to do it for 2 or 3 weeks only? It would help me to feel better until my checkup and My medecine is changed or whatever is going to happen, But do you think I would be able to put on some pounds and maybe help growth in 2 or 3 weeks? And maybe help my crohns in general by giving it a break and maybe after I start eating again It wouldn't hurt as much or possibly even not at all? The ensure chocolate drinks kind of give me a stomach ache If I drink them and eat, But I do know from experience that after a few days they don't bother me because there is no solids going through me anymore.

If I did go the ensure plus way, how many would I have to drink a day? their 350 cals each, the average diet is 2000 cals a day, so thats about 6 drinks a day. Is that about how many I would need to gain weight? Would I have to do even more than that? or less? I'm kind of new to this, so If I was going to do it, what would you reccomend? You can reccomend a different product if it is easy to get.
And do you think If I actually did this for a full 6 weeks it could put me into remmission for a year or two maybe even? If I had to do this for 6 weeks every 2 years or so, I'd rather do it then get injected with medecine and take pills every month.

Sorry it's so long, but anyway, try to help/fill me in.
thanks!

i don't think this is a good idea if you are skinny already because you will lose more weight. if you are flaring, you will probably still flare while drinking ensure- i should say ESPECIALLY since you are drinking ensure. it's total crap so i would never recommend drinking this for health. there is no certain number of weeks for an elemental diet but the longest i did all juices was 4 weeks. i didn't notice any difference in symptoms even though i wasn't eating food. i have also done a no liquids/food fast for week (bowel rest in the hospital) and still didn't see any difference.

i have tried jini patel's elemental drinks and they actually aren't bad. it's called absorb plus but they are pretty expensive. they don't have any of the crap that ensure has in it and you can make each drink over 400 calories.