Heck. I still feed my 8yo on demand.
Real food, of course.
Some kids grow REALLY fast, and they just need to eat. And some kids have small stomachs and just need to eat more often.
I'm trying to remember when my son stopped eating at least once a night and am drawing a blank. But at some point, he progressed to only eating a full meal in the middle of the night during growth spurts, and just drinking warm milk / hot chocolate (he hated white milk) in the middle of the night. Then around 4ish/5ish he even cut out the milk in the middle of the night.
But every time... he was just flippin' hungry. If I fed him (either WM/HC) first time he woke up (and I could just zap a sippy, hand it to him, change his diaper and leave)... he didn't wake up again. If I did the whole soothing thing... then he'd wake and wake and wake and wake. He'd sleep because he was tired, but he just kept waking up because his body needed nutrients. Starvin'o'the'hunger.
At 8, kiddo still eats every 3 hours in the daytime. But he doesn't eat at night unless he's in a growth spurt. But in a growth spurt he DOES wake up. And takes his happy little feet downstairs and makes a PB&J and pours some milk and eats and washes up and gallumphs back up the stairs. If I'm awake he may ask me to make him an omlette. But if I'm asleep... I find smears on the counter in the morning and a dish in the dish rack. <grinning> Things to look forward to, that! I'll take smears on the counter over waking up QUITE happily!
I think of it like this: I was *Starving* when I was preggers. And I only had to grow 10lbs worth of person... a fraction of my own size. Kiddo tripled his weight that first year, half doubled it his 2nd, and halved it his 3rd. By year 2 he had also doubled his height (23 inches at birth to 37.5 inches at age 2) Can you even PICTURE how much food you would have to eat and how often to double your weight? Much less double weight AND height?
As always, not what anyone else should do, just my own personal opinion: If a kid is hungry... feed them.
And yeah. Some men are just dumb.