Yep, its tough from the stories some Plebes have told me. You will do nothing "right" during Indoc they say. But, it's nothing that you can't do maxf90. Its physically rough, its mental agony, but you can do it. How it differs from other academies is that it is indeed shorter. Mainly due to students having the 11 months tri-mester system of the school year to jump straight in to. They have to move them on a little faster to get them ready to go to sea for Sea Year. A KP kid told me once that Indoc had been a breeze compared to the academics that were currently kicking his butt.
Best quote I've heard from a potential candidate/candidate. All anyone will ever ask of you is to do your best. If you put out your best every day you will do well anywhere you go