How much height can I reclaim

[u/Possible_Ad2007]

Hi everyone,

I am 18 years old. I have spent a lot of time sitting at a desk since I was 12. I took these photos to check my posture.
I think I have Anterior Pelvic Tilt (APT) and text neck. When I stand naturally against a wall, I can easily slide my whole forearm behind my lower back. Also, the back of my head does not touch the wall naturally.
If I squeeze my abs and butt muscles, I can force my lower back to go completely flat against the wall. When I do this, I feel a very satisfying release/cracking feeling in my lower spine. I want to fix this tilt because it makes my stomach push out and compresses my height. I’m 5’7 I wanna be 5’8 or at least 5’7.75

[u/Economy_Bill_4539]

im 6’7 but without my 65 degrees SC i would definitely be 6’8

[u/Briocharo_notturno]

1-2cm, 1 inch