err...I would go and get at least an intro flight. Your mind may want to get into air, but body can disagree...and violently.
I don't know if TBAS is still a thing, but having about 10 hours helps. Having PPL is a plus, but not a must.
You need very glorious recommendation letters so I would start on that now....showing that you give back to community and such.
You need to be in shape. Round is not a shape btw.
Check out local guard units. They are hidden wonders that many do not know about. Meaning you don't need to be active duty to fly.
What's the final goal? Do full 20 and jump into airlines?
Also never fully trust a recruiter. They lie. You can usually tell when their mouth is moving.