How can I compress my ROTC coursework and Advanced Camp to commission after Fall of 2025?

(Join to see) - See above. First, all the 09 classifications are simply a holding designation for non-MOS Qualified soldiers. You don't have to join the Reserve/National Guard to skip the first two years, ROTC Basic at Knox will do the same thing. While you are technically able to join an SMP program without an MOS, most won't even tell you that fact because it doesn't allow you to participate in the programs strongest points, the GI Bill, and they consider it a waste of time.

You can attend OCS as Army Reserve or National Guard with 90 credit hours of College. The same applies, you just get in if there are not enough fully qualified available.

So my big point is that if you are joining to pay for education, get MOS qualified to take advantage of the benefits. I don't have a recruiting quota to meet, so while my Recruiter never lied to me, his job was to get me to sign on the line and in a job that needed filled, but there was stuff he didn't tell me about too.

Cadet CPL (Join to see) - Call your advisor at the School you are planning to attend. I think that your problem is going to be that ROTC classes tend to be arranged around the school year. Looking at a local university, the 300/400 level classes are arranged around the school year, so starting level 300 classes from the fall semester aren't taught again until the fall of the following year.

I still think you are missing most of my point. You miss out on most of your educational benefits by just completing BCT. No GI Bill is a fairly big financial hit. If you just want to save some time, ROTC Basic Camp puts you at the same place as enlisting and it's shorter.
I don't have a clue why anyone would advise you to take this course of action instead of informing you how much you lose by not MOS qualifying. No to mention that there are enlistment bonus's that are available, all require that you MOS qualify. Even if you commission before you complete your enlistment, Army Bonuses are prorated, so you would keep the percentage based on the time completed.

You are mixing 09S, Officer Candidate with 09R which is an SMP cadet.

COL Jon Thompson - No sir. I recognize that there are a number of 09 categories. They are all a designation for some kind of trainee, except for 09L interpreter, which does seem to be an permanent designation.
What I don't understand is why a recruiter would recommend the course of action of attending BCT and then going SMP where the recruit gets nothing from it but experience. Unless things have changed a lot, Cadets can apply for SMP and enlist before their Junior year without BCT and Basic ROTC Camp is only required if you don't do the first two years.
If that cadet had asked me, I would have told him his best bang for the bucks is to enlist in whatever MOS he thought he would be interested in doing, get his GI Bill stuff and any enlistment bonuses, then apply to ROTC as a Junior and then go SMP. If he wanted, he could still attend the MS classes at 100/200 level as a non contracted cadet, although I personally wouldn't.

A wise man once told me it's never a bad thing to have too many good options.