URGENT child health

if- day after day- when a 4 year old says "I am done"  and feels satisfied but despite that parents push them to continue eating... 2 physical results are: they will become "conditioned with  habit" to ignore the message signal of satisfaction that the body sends... after all the kids stomach is smaller than my adult one... unless i make the kid STRETCH  it... which is the second result of eating more when you feel "satisfied"  which leads to "overeating" later in life and in my situation from age 20-30 noticing that i never feel "satisfied" until the stomach stretches enuf to feel "full' but the goal should not be to feel "full" but instead to feel that "i ate enough..."--!