Same here. My theory is that putting in a bit of effort early probably has more long-term impact than trying to “fix” your mistakes later. On the other hand, I’m not a food nazi - my mother was, and that totally backfired on me.
My daughter (2) gets good, whole foods that are mostly unprocessed (well, except by me, of course) for I’d say 80% of her diet. The rest is mostly Yoplait yogurt, Trader Joe’s O’s (Cheerios) Ritz crackers, Goldfish, string cheese and American cheese slices (although I do get the “premium” kind with more milk per slice.) If we’re having some prepackaged thing for dinner - say, a frozen chicken kiev - so will she, but I try to serve two veggies - one hot veg, one salad, for every dinner that contains a prepared or box food.
We use one of those tri-divided plates, put the “main” largest compartment gets the veg, and the smaller ones the meat and the starch. My hope is this will teach her what the healthy ratios are. If she (as she usually does) asks for more noodles or rice, she can have it, but I also spoon her a little more veg, even if I know she won’t eat it. I hope that in time this will teach her not to binge on the high fat high carb parts of the meal, but take balanced seconds.
She has juice no more than once a week - her doctor calls it “pop without the fizz” and attributes a great deal of childhood obesity to drinking juice. Most of the time, it’s water for her, with no more than 8 ounces of 1 or 2% milk a day (yes, she was on infant formula/whole milk until 2, in accordance with current recs.)
Deserts are mostly fruit, but if we have ice cream, she gets a taste. If my son has candy, she gets to try some. I feel that making such things totally off limits makes them more desirable.
Most of all, I don’t make meals a battleground, to avoid the emotional complications of food. I don’t cajole, or beg, or yell, or offer her food when she’s upset or angry or bored. (In fact, if she’s asking for a snack but has eaten recently, I’ll ask, “Are you bored or hungry? Sometimes they feel the same. Do you want me to read you a book?” and often after the book she’s not “hungry” anymore. Sometimes she is, so she gets the snack. She eats or she doesn’t - that’s her job. My job is to make sure that most of her choices are healthy ones so that when she does it, it’s good stuff.
My son is 14, and I did basically the same for him. While he has a definite fondness for candy and ice cream, 7 times out of 10 he chooses an apple to nosh on instead, even if candy is around. He’s a very muscley kid with very little body fat - except right before a growth spurt!