Welcome @alloutofcareunits and @Nonononon - I can absolutely say that this works and you'll be really pleased with the results if you stick to it.
I have tried all the diets going over the years, lost a bit, got bored, put it all (plus a bit more) back on, rinse and repeat! I put on a stone in the first lockdown but, for some reason, I just managed to get into the right frame of mind to give this a really good go. I started in August and tomorrow will be my 12 weeks done. As of today I have lost 32lbs. I still have the same to lose again but I'm happy that this will take a bit longer.
I'm trying not to be too boasty about this - even though I'm delighted! I'm hoping it's encouraging for anyone that has consistently failed at other diets, like me. It does work and you can do it! 👍