Is it 2 or 3 APFT failures to initiate the separation process? What is the exact regulation?

I sort of doubt that. I would think that you would have to fail APFTs administered by BN CMD personnel functioning as an objective or neutral arbiter.
Irrespective as to whether I am correct or not, I would expect every member of the unit to have the right of appeal to very senior authority or the IG (though I would make the IG my very last stop).

Go un-fuck your self if your ever want to make rank... this isn't the apologizing downsizing commander in chief... get your battle buddy to go to the gym with you don't exercise the day before a pt test just do some yoga etc maybe a light jog drink water and get plenty of sleep to allow for your ligaments to heal or go with plan B get a negative consoling by the top and when your team sgt gets his/her ncoer and your the reason for the negative remarks every time he/she sees you there going to smoke you till you cant move force you to drink water and do it again... as far as your meeting with the commander keep it simple stupid when asked what your poa is tell him or her sir I am going to watch my diet have so and so go to the gym with me so I can keep the company green

Man, wear to begin! Failed the sit-ups, terminated for running during a walk. SPC you have only one choice to make...am I going to be a soldier, or is it time for me to move on. If you have such a difficult time meeting the APFT requirements now, the new PT test is going to tear you up...decide, be the best soldier you can be...which includes committing to maintaining my Physical abilities to support yourself and your team mates as a soldiers, if you're just there for the money/job...its time to move on...because if the APFT doesn't get you the deployability will. Time to soldier or time to move on, its your decision, and only you control your future. Pass the APFT and all this goes away, simple.