

Different types of sugar are digested at different rates, even if they all taste sweet. Glucose, fructose, sucrose, even allulose are found in fruits I’m different amounts and are all suggested differently. There are also various starches that change digestion taste and some of that (not not all) break down into sugars with amylase in saliva. Different kinds of starches break down at different rates and are digested differently and can alter the sugar absorption. Different kinds of fibers feed different kinds of things in your gut biome and are processed differently by your body too. Those are just the basic categories of carbohydrates without going into details of the different roles they play in digestion.
Fruits, veg, whole grains, all have different nutrient profiles and your body treats them differently. Consuming a multivitamin with fiber supplement and sugar may get your caloric and some vitamin needs met but you will be missing many other things that a diet with a broad variety of foods can offer.
Reliability, patience, kindness, interest.
Previously, many fathers didn’t even change diapers. Reliably being there for your kid day after day, from diapers to little league games, are all important.
Patience because kids try new things in a new world they are still figuring out, and to you it might seem intentionally pushing buttons but they are literally new.
Kindness, because while you are dealing with them having a rough day causing you to have a rough day, you need to be kind to both yourself for getting frustrated and them. Life is rough, we don’t need to make it moreso for anyone.
Interest, because no one should feel like no one is on their side, like no one understands them. Encourage them for things they are interested. Be interested in what they have to say even when they are just telling you they saw a rock, because they just learned what a rock is. They will keep going to you and tell you all the things they are doing later in life too, and you will have a better overall relationship.