If I’m going to a non-airborne unit at Fort Bragg, how can I change this so that I can jump?

SSG (Join to see) Get reassigned to an airborne unit with a PPP for you to fill.

Reach out through Sergeant Major channels and see if you can get a letter of acceptance from an Airborne unit, I have to imagine a 20 level wheel mechanic is still fluid enough of a billet to switch out. Branch is ok because you are Bragg. gaining unit is happy, they get a fill that wants to go to Airborne school. Losing unit is happy because they got a fill. I have to imagine there is another 91B20 that is tired of the Airborne life that would take a non parachute assignment that is at Bragg.

If you are due in at an Airborne unit, you may get it TDY enroute on your orders.

I wish I could help, SSG (Join to see), but I enlisted in an airborne unit, so I’m no help to you in your quest.
I did flip your mirror image photo for you so that you may use it as your profile pic.
Best of luck and Airborne All The Way!

I’m sure others more up to date will provide you with guidance. In my day you needed to get a letter of acceptance from a unit on jump status that had your MOS. As long as the losing unit had no objections that all it took. That’s all I had to do.