ill be doing this over winter break from school. I can't afford it now, but for 4-5 weeks with no job and nothing but eat,sleep, lift and random stuff ill be alright i think.
If you drink coffee try decaf, maybe you can trick you mind into thinking you are taking in a stim? Long shot but one. Or green-tea, little caffeine and great for you.
Goodluck though, i've done it before and it sucks!