Overeating, is quite common nowdays I think, I was always making a sandwhich whilst dinner was cooking, (rude I know), The thing with Bread ,Pots etc, is it fills you up with stodge, but seemingly digests quickly, whereas, fat, and fatty foods, fill you up, (fills me up anyway, a breaky of cheese, peanuts, nuts, salami, ham, cheese, butter and an egg and 3-4 crispbreads, ) and by lunch time, your still not hungry. A dinner with some fat content no carbs, and full up again, no snacking after. Mostly tho' I ride 40-60km before breakfast (fasted) , then think , stuff it I'm not hungry, so have a brunch instead.
If I wasn't physically active, I rekon I'd be a slob, and I be joining you on the BAND wagon! But in all honesty no I won't get like that, ever. I see my dad in my mind , and think NO, put that food back, and get off your backside.
These are exciting times for you, and your family, a journey that will lead to many good things, a journey that you can all be part of, Enjoy the very best , of the rest , of your life.