I did ILE via TASS
Phase 1&3, 2 weeks each
Phase 2, one weekend per month
ILE would suck donkey balls to do by yourself. The advantage of having different branches in the same room cannot be underestimated. Parts of it would be incredibly difficult to grasp on your own unless you’ve had a good deal of operational experience. And even for the guys with tons of deployments in other branches, they had trouble at times as well. In my class, none of the physicians, nurses, or dentist were all that savvy for the “Army” parts of the course.
There was a JAG officer that was in phase 1 with me that tried to do phase 2 on his own. I had finished phase 3 and he was still repeating coursework in phase 2. Leavenworth would have him redo crappy work, much to his surprise.
I actually enjoyed ILE. It was kind of fun to exercise part of your brain that you don’t normally use. Heck, I even enjoyed writing the history paper. Mostly because I have been reading military history for fun for decades.
Phase 2 was by far the most time-consuming. I would estimate 20 to 40 hours of reading and work between drill weekends. But my type A personality drove me to try to excel, not just pass.
There is a four month course for active-duty guys that’s offered at Fort Gordon and Redstone Arsenal IIRC. Not sure if they’re gonna continue that. I had an acquaintance that did the four-month class at Redstone, he had nothing but good things to say about it. Beats a 10 month PCS to Leavenworth if you’re active-duty. Although, everything I’ve read about the resident course is that it is a long vacation with plenty time to spend with your family. But not the best for maintaining your skills as a physician
Being totally honest with myself, I’m not sure I could have finished ILE on my own, but I was top 20% for the TASS approach.
Ymmv