do you guys think it's possible for IF to reverse aging? I'm 22 but I seem to be aging extremely fast compared to other people my age. I already have fine lines on my face. I'm hoping IF will not only stall, but even somewhat reverse this. Is that too much to hope for?

Hi ankylosaurus - welcome to this forum! To answer your question, while you can't stop or reverse aging, you can slow down its effects, and you can become healthier in specific ways, such as improved strength, fitness, endurance, immunity and mental clarity. Certain signs of aging, like grey hair, may not be reversible. The question of skin aging is an interesting one, and has spawned an entire cosmetic industry. I don't know much about cosmetic treatments, but certainly there are skin nutrients like Vitamins C, A and D, zinc, dietary oils (particularly omega-3 oils like fish oil or flax seed oil, and medium chain triglycerides like coconut oil) which can dramatically improve skin texture and tone, plump it up, and reverse or at least soften wrinkles.
I also think that cutting down on sugars and reducing insulin seems to help skin texture. One effect I noticed from IF (perhaps helped along by fish oil) was the total disappearance of rough skin I used to have on my elbows. Now the skin there is smooth and shiny.
ESE style Intermittent Fasting and then later Leangains style eating windows got me down past my target to between 140 and 144 depending on the day and whether I buried a pizza the night before. I love it, I feel great, no longer think too hard about it and I still feel fine on my runs, whether it's fasted weight training, fasted sprints, and fasted longer runs. The only time I feel the need to eat before a run is when I'm trying to hit my race pace for an extended period. I can still play 3 plus hours of beach volleyball as long as I'm hydrating enough. Hope this is informative and or a little helpful.
Welcome, SkiPK! Sounds like you have found a way to harness IF very effectively to stay fit and feel great.