Your relationship with food must be wildly different from mine… Waiting until hunger arrives is something I always had a problem with… But I do get hungry every day in the last years. It’s not so much scary to me, more like plain impossible. But I hope I get back my fasting abilities at some point…
Ouch, your OMAD is super tiny. It’s not even low-key starvation, I must say… It seems OMAD isn’t for you - but I can understand it’s your decision and I don’t say it won’t work as it’s possible it will, it just sounds scary that can go wrong easily, one way or another.
(Your OMAD is a few bites if I translate it to my normal food… But that’s another thing, of course it can be done with big volume, still very low nutritionally.)
At this point, I would advice to eat when you get hungry or crave something. You can eat twice as much and it’s still quite low-cal so fat-loss shouldn’t be a problem.
It doesn’t. Just for people who can’t eat enough in one sitting. But in this case… Yep, the average protein intake per day is worryingly low (and the energy intake, nutrients in general too).
With this little food? Hardly. Not just subtly starving people don’t stuck in some overweight state, there is a limit and in this case, the food has extremely little energy compared to a needs of almost all adult human bodies. Some people can survive on surprisingly little food but this little? I seriously doubt it.
It’s still a bad idea and some problems will arise but quite probably not that one.
That’s right. Some fasting, lots of OMAD? That’s fine (maybe not these OMAD days for longer term though) but we need some higher-cal days eventually and not in the distant future. IDK how much fat-loss is needed in this very case, sometimes a big deficit works all the way for someone, it may be tricky, it may need the right person to be able to maintain afterwards but a long time of undereating is much more damaging than a short one as far as I know and it makes sense.
An occasional higher-cal day sounds good to me, more nutrients, better for our sanity (for us who aren’t completely happy with less food each and every day, at least) and maybe the body realizes there is no famine… So it can’t just decide it must do its best to use as little energy as possible.
When the mentioned cravings and hunger arrives, eat then? Or just eat without hunger. I understand it is not always easy but some items are easier to eat than others. Even in my super rare “I really can’t eat” times, I ridiculously easily could drink 500 kcal or something. But soft food is easy too (for me and I suppose for many others as well). It helps if it’s something we normally love… It’s very special case when someone is physically unable to try even a few bites outside of their tiny OMAD meal.
Mentally it can be trickier sometimes.
Do you like cream? It adds fat calories easily and some of us need to hold ourselves back a bit… 
It’s individual. It was always 4lbs for me but it happened in the first 1-2 days so it would have been easy to see what is real fat-loss if I ever could lose a noticeable fat on keto (I can’t eat less than high protein and I exercise enough for my little muscles so muscle loss isn’t my concern). But I have heard way bigger numbers and it can be spread a bit. Still, I don’t think if you lose after the first week, it can be much water weight…
And you will see if your figure improves anyway.
So keto is new to you and you already can add these extra restrictions? Wow. I was content with just doing keto without feeling miserable! Most of us usually start with that (if fat-loss happens, great but main thing we get used to it, it’s already a challenge. even for me and I only halved my net carb intake!) but of course, some people find it easy enough to add lots of fasting.
Good luck! It’s good you try to eat somewhat more 