In my entire life I’ve done on and off OMAD before I knew it was a thing. Reciently I’ve started a 3 day fast. As for hunger I’ve been adding a tsp of inulin power.. to feed my microbiome. They express Ghrelin when they expect to be fed. Perhaps try that?
I mean there’s a difference between seeing food and wanting it v.s. your body feeling it needs food. my body isn’t hungry.
Of course it’s important to make sure your electrolytes are awesome (not just salt)
It gets easier but IMHO you need to train your mind as well as your body to prevent rebound over eating on days you don’t do OMAD or fasting. Feeling deprived is a real physical feeling and it affects your mind as well. You will need to find out what works for you, but with perseverance you can find it.