Say someone wants to lose a bit of weight but they only remove breakfast, which is 3 boiled eggs and coffee, will it work or are they skipping too little to make a difference?
You will lose as long as you stick to your eating window and not eating bad things for lunch + dinner.
Its all about the Fed vs Fasting state.
Lets say you do 16:8, fasting state for 16 hours, fed for 8. The norm is 12:00pm to 8pm.
As long as you consume 0 calories in your fasting state you will be okay (no breakfast, no milk, no sugar, no mints, nothing)
The longer you stay in a fasted state, the more fat you'll burn.
If you snack till 10pm, you will reduce you fasting time, thus reducing results.
If you consume calories in the morning, you will immediately be OUT of your fasting state, back to burning glycogen, not fat.
Im currently doing about a 20-4 , 23-1 IF/OMAD on weekdays, normal eating on weekends. Really easy once your body adjusts to it. Lost 5kg in my 1st month, quite happy.