I do OMAD.
I've always been slim, but when I started steroids (cancer treatment and heart problems) and mirtazapine thrown in the mix, I felt my metabolism change almost overnight.
For me to maintain my 'normal' baseline weight I have to do OMAD for 4 days out of 7.
I don't get overly hungry anymore and I'm used to it. The days where I relax I still can't eat 3 meals a day. But I have so much more concentration now, and I don't get sluggish during the day. By the time dinner comes around I am very hungry, but I don't get that horrible blood sugar spike / drop anymore.
On the days I do OMAD I still have tea / coffee (with milk and sweetener!) and the odd smoothie.
I really like it. I fall into doing fasting and OMAD at the same time. As you said, fasting can be so good for you.
I can now happily take my medication and not worry about putting on weight. The first week was hard. Really hard. (Steroids and mirtazapine make you ravenous) so I had to try and not eat with my normal hunger, with added medication hunger on top. It was insanely difficult, but it's so, so worth it.
Got myself in a lovely routine now, Monday Tuesday Thursday and Friday OMAD / fasting. Wednesday, sat and sun, I relax and get what I like. (This can include pizza / takeaway)
I've been doing it for 2 years now, and the day that comes when I'm off the meds, I'll probably carry it on.
I'm 29, 5'4 and 9 stone on the nose.
(I went up to 10.5 stone in 2 weeks when I first started the meds)
It's notoriously hard to lose weight on mirtazapine and steroids. It's the only thing that's worked.