Best way to pay for FNP school without extending my Active Duty commitment?

Im an active-duty Army nurse (66H) and my current active-duty commitment ends in 2029. My goal is to complete my 4 years active duty, attend FNP school while I’m still active duty, and then transition to the Army Reserves afterward.
I’m trying to figure out the best way to help pay for FNP school without accidentally creating an additional active-duty commitment.
I know Army Tuition Assistance (TA) is an option, but my understanding is that TA can create an ADSO, which could potentially interfere with my plan to leave active duty in 2029 and move to the Reserves.
Are there any other Army education benefits/programs I should look into that would help pay for an FNP program without extending my active-duty time?
For example:
Is there a way to use TA during my final years of active duty and satisfy the resulting obligation in the Reserves?
Would the Post-9/11 GI Bill be a better option?
Are there any AMEDD-specific programs for FNP school that would work better with my plan?
Could HPSP or any Reserve programs such as STRAP/HPLRP be options?
If I ultimately want to become an FNP and serve as an Army Reserve NP, is there a specific way I should structure my education/transition to make that happen?
I’m still a few years out, so I’m trying to understand my options early rather than waiting until 2029.
Would especially love to hear from Army nurses who went 66H → FNP → USAR and how you paid for school/handled the transition!