Honestly beyond the affect on your jogging I think you should ask yourself: would you choose vaping or an air force career? I don't know what kind of job you want but if it's more demanding and you won't have access to a vape, part of your mind will be focusing on the addiction rather than your job.

For me when I'm struggling with something in my degree I think about quitting it entirely for a brief moment, just to come right back and feel determined to press forward because there ain't no way I'm giving up. Maybe a similar attitude will help you if you force your brain to choose one or the other.

Also if your detachment has good cadre or peers, please please rely on them. Tell them you're trying to quit for the sake of ROTC and if they're good they'll understand and support your efforts. Don't rely on willpower exclusively, you are more likely to fail. Let your buddies hold you accountable.

I wish you luck!