You can 😀. I did it (well almost, as it was 10 stone I lost) - I went from 23 stone to 13 stone and have kept the weight off for nearly 10 years now. And I didn’t use weight loss injections.
Personally I’d found things like fad diets/big diet changes, weight loss medications and weight loss groups had never worked for me in the past (so I’m sceptical of the new injections too - at least in terms of people being able to keep the weight off that they have lost in the longer term once they have stopped them). In the end after so many years of trial and error and weight yo-yoing, I had to make my own food changes to suit me, and that I believe I can stick to for the rest of my life, in order to make it work.
But I admit it was/is very hard to do- I have had to accept that I will always have a propensity for poor food choices and be mindful of it. I must also be honest and point out that I am still nearly 2 stone overweight at the 13 stone, so still don’t look remotely slim 🤣 and I have lots of loose skin, despite losing the weight very slowly. Imo you can’t avoid that if you are losing a large amount of weight in your 30’s or older, whatever people claim (may be different in your 20’s when the skin is more elastic, providing you do enough exercise too).
However luckily I didn’t do it for aesthetic reasons but for health ones. And I had a really good reason to keep going as I wanted to become a Mum and knew that my chances were better if I got my BMI under 30 - I needed to have IVF because I’m a SMBC. So it was all worth it as I now have my DS. But If I hadn’t had that really good reason to keep going, I don’t think I would have had the determination as it’s a tough and long road.
I just wanted to share my experience as people now often seem to think that kind of weight loss isn’t possible without weight loss injections or regularly attending slimming groups etc. You don’t need them, although I’m sure some people do find them beneficial and worth the cost and/or risks. It is possible to do it without them and it’s equally possible to keep it off too - as long as imo that you have realistic expectations.
(Personally I haven’t ever been smaller than a size 12/10 stone since I went through puberty at age 11, because it’s just not my natural body shape - so staying a size 16/13 stone in my mid forties seems a reasonable goal for me. Maybe if I’d pushed harder like some do and tried to get down to that lower weight like I’d been in my early teens, then I might have failed and given up. So imo it’s important to remember to have realistic goals as well!)
Good luck to you ❤️