[Acne] How long will it take to fix dehydrated skin from chronic sleep deprivation?

I am a 16 years old girl and I've been having a horrible sleep schedule since 10. As a result, my skin isn't looking really good right now. I have dehydrated skin, saggy skin, dark eyebags, closed comedones, bumpy textures, red acne scars. I always feel so horrible whenever I do my makeup because it can never look exactly like I wanted since I have such dehydrated saggy skin and my eyebags are so prominent.

I've been wondering if I start sleeping at least 7 hours every night, will I be able to fix everything? If yes, then how long will it take? I'm guessing it would take quite a while since I've been sleep deprived for years now? I am just so tired of not having youthful plumpy skin when I'm a teenager, it truly makes me feel so insecure. So I'd really appreciate it if you guys help me! Thank you.