Dealt with something similar as an adult.
I'm shorter though, 5'6. Used to wrestle competitively back in high school at a high level. Won more than 150 matches and placed well at state. Wrestled through one year of college before breaking my back. Competed in high school around 160-171 with a full six-pack. Genetically built for it, solid muscle back then. Got nicknamed after a short, stocky cartoon character because of my build, ha.
Then the back injury happened, and while it didn't leave me paralyzed, recovery was long and brutal, spinal fusion and everything. I was about 19 at the time. Went downhill after that. Tore an ACL later. Started having stomach problems and it took two more years to get diagnosed with celiac.
Now I'm 50 and climbed up to 250lbs. Sure, my frame's still carrying a fair bit of muscle mass, but even accounting for that I'm probably 75lbs above where I ought to be.
Tried losing weight so many times but always stall around 200 no matter what I try, get discouraged, quit, and gain it right back. Used to genuinely believe this medication class was cheating, honestly looked down on people using it. But over time I've come around to seeing it as just another tool. Pretty sure I've got real limiting factors working against me too. With the back issues