Here's what your recruiter PURPOSELY DID NOT tell you. You had the option of applying for an NROTC scholarship without enlisting. In fact, a person who is awarded an NROTC scholarship THEN enlists in the Naval Reserve. Most people apply for this scholarship during their junior year in High School.
Basically, this guy heard very well what you were saying - even though you didn't - and he sold you on the idea that enlisting in the Navy Nuclear Program and an NROTC scholarship are somehow related. They are not.
Send your mother down to his office to slap him.
But, it's too late to change the fact that you have enlisted. I would not describe you as indecisive. The fact is that you have already made an essentially irreversible decision. And you are naturally going through all the second thoughts and doubts that we ALL went through at this point.
Pay attention. While you are an enlisted Navy Nuke, be the best enlisted Navy Nuke that you can possibly be. Apply for the scholarship no matter what. You do not have to accept the scholarship, but you don't get that choice if you don't apply. If you get it, I think you should take it.
If you go to NPS and get an NROTC scholarship, you will be transferred to the Navy Reserve. You will no longer be in NPS, but will go to a real college. Instead of being a Petty Officer, you will be a Midshipman. You will be a civilian most of the time, but will still have to participate in NROTC activities. When you graduate, you will be required to serve as an officer for a number of years (I think it is four). If you drop out, you have to go back to finish your enlistment.
I'm chuckling at your use of the phrase "college life". College is not life. It is nothing like life. It only lasts a few years, and it is NEVER the right decision to choose college for the experience of being in college. You choose a college for the benefit it will give you for the rest of your life. College "life" is bullshit. A college education is priceless.
If you want an education, go to a school. If you want an "experience", go to Disneyland, backpack across Europe, go skydiving, climb Everest, sign onto a fishing boat ... etc.
You could either love or hate the college "experience" or the enlisted nuke "experience", but remember that you are not doing it for the enjoyment of the experience. You are doing it to get training, education, and skills, as well as an opportunity to serve your country, and maybe travel a bit. Yes, that can be described as an "experience", but experience goes on a resume. Whether you love it or hate it, when it is over you will not regret it.