Any advice on a path into the Army Nursing Corps?

Make sure the nursing program you enter is certified and credentialed... there are some fly by night programs out there so make sure you are entering a valid program... Once you get about 60 credit hours under your belt and you have only two years left in your BSN, program, I would apply for the Army's Enlisted Commissioning Program... I think this still exists.... If accepted, you get to go to school full time and still get your full pay and benefits...After graduating with your BSN, you will pin on butter bars. If you don't get accepted to that program, you can still get your RN on your own (will be challenging getting your clinicals in while still on Active Duty). Then you can apply for direct commission after graduation.

Great to hear that you have a desire to follow this incredible option within the Army Nurse Corps. The best way to proceed, in my opinion, is to get an early commission while you are in a BSN Nursing program. BLUF: you do not want to seek a commission with anything less than a BSN (for example, ADN program or diploma program). Make sure you meet the height and weight standards and that you are working on being physically fit. The way to progress through the Army Nurse Corps (AN) is to assure that you complete your military schools on time and that you seek advanced degrees (for example, MSN) by the time you are looking for the rank of MAJ. Also, find a mentor that can best influence you to solid leadership and clinical expertise, and focus on evidence based research. These are all, probably, a bit confusing for you at the moment, but they will all be elucidated as you reach each pinnacle. Good Luck to you, and I truly wish you a most successful career. TEB

The best option right now is to put in for an ROTC nursing scholarship or the AECP. I'll echo others; a two year diploma will not cut it and you cannot get commissioned AD. It was allowed for 2nd and 1LTs in the USAR, but if they have not done away with that yet, they will shortly.
If you bounce around chat rooms right now someone will tell you that there is a lot of right sizing going on in the ANC right now. They should also tell you that it is year groups ahead of you and it should not affect you or your promotion (we over recruited in the late 2000s).
Feed that flame of desire and move towards that 4 year degree. Good luck.
Serving to heal, honored to serve.