How to lose weight fast? Help???

So I’m 18 years old and I’m 5”2 so quite petite, I’m in lockdown and before lockdown I was about 9 st and now I’m 8st 9 sometimes go down but usually back up to 8st 9, I go to sleep around 2/3am and wake up about 2pm to stop me from eating as much, I’m happy with my body but I just want to be better and lose a bit more, I’m wanting to go down to 8 stone, I want to get to that before lockdown ends on the 2nd of December, as when I’m at work I eat a lot. And it’s hard to eat healthy when I’m on my feet all day and burn so much energy I just crave bad foods, so I’m wanting to lose weight now before I go back, I’m eating one meal a day but not going down in any weight and I’m wondering what I’m doing wrong, how much weight could I lose by December 2nd? It would me very appreciated if I got some advice Thankyou!

You can't.
And even if you got close to your goal, you would very quickly regain the weight that you lost.
Why do you want to loose weigh?

So,Although I totally see where you are coming from - weight doesn’t actually always relate to caloric intake (is the food you eat)There comes a point when your body is at its healthiest, and at less than 9st, your weight is lower than most people’s healthiest. My advice is to stop. Stop spending time and energy and starving yourself to lose weight. Maybe don’t weigh yourself until new year. Give yourself a break. It won’t seem easy but in 10 years, the difference between a few pounds is nothing. Unfortunately today, people are obsessing over weight and it’s so upsetting. I know it may not feel serious, but I advise you talk to a doctor about how you’re feeling, as they can refer you to specialists that can really help you - not to loose weight, but to have healthier goals. It can be scary, but it’s so much safer to be early and talk to someone now. Wish you all the best with this, if you ever need to get some help there’s people out there x

I appreciate the reply and yes I have heard that if you starve yourself you just regain all that weight...I guess I kind of have an obsession if I’m honest, I’ve always had a problem with my body even when I was 14, I went to the gym at 14 and hated it, I have learned to love my body so much more, the more I have grown up, I just think I would be so much happier being able to reach that 8st goal..I would feel so confident and happy, I know starving isn’t the best option but what if i reached up to my goal and then I just east healthy meals on a balanced diet, my head just gets to the best of me I guess, it’s definitely an obsession..

losing fast is not a good idea, you need a long-term plan.

Have you ever spoken to anyone about that? Maybe there are other ways of making yourself feel more comfortable.

While weightloss might seem like the answer, I doubt it would provide you with much relief for long. The grass always seems greener on the other side

If you feel like it, have a look at this website, I don't know if it is relevant to you. https://www.beateatingdisorders.org.uk/