Sounds like intermittent fasting.

i know more people who do 1 meal a day, i don't know what it's like for her but they just eat pretty much their daily meals all at once.
I personally have been doing IF since early 2019, my eating window is just a few hours. I find it very comfortable to eat a lot all at once and then not worry about it anymore. I actually started it because of severe IBS symptoms. It would really interfere with my day. My IBS is still not great but it has improved because of IF, because I give my digestion a long period of time to rest and digest the cramps aren't as severe anymore and ever since I haven't had to lie in bed all day anymore because of it. Which is a win for me. I don't do it for weight loss/management, I have no weight issues and I have been roughly the same weight for many years now, weight or "dieting" is not part of my decision.
This all is a personal experience and a personal preference, please try for yourself what suits you and your needs and also your lifestyle. This is not possible for everybody and it doesn't have to. Be careful of your body and look after it in the best way possible everybody ♥