When to eat vs hunger scale

Hi Brooke,
This is my first week and I’m happy about this overeating program, but overwhelmed with all the information,
From what I understand, one shouldn’t eat until you feel a whisper of hunger ( a 2?) and then stop at a two, just satisfied, right?
But then I heard you say if you want to Dine in, so your body eats its own fat and you feel hungry, DON’T eat and the hunger will go away. How do I reconcile the two? When I get overhungry, way past a two, then it feels like nothing will fill me up.
I also believe(?) that it takes 20 minutes after a meal for your body to feel whether it’s full, so I’m not able to be sure that a few satisfying bites will mean I’m sated or not?