Too many carbs, or inconsistant carb portions at meals and snacks, can make insulin dosing tough.

If you can plan meals at evenly spaced and consistant times, that makes dosing easier.

If you can plan a specific number of carbs per meal, like 1 serving per meal that helps.

Carbs can be simple, aka sugars, or complex, aka carbs.

More carbs than our damaged systems can handle result in high blood glucose numbers.

Most people diagnosed with diabetes can handle 100-130 net carbs daily.
Some only 80 net carbs.
Some only 50 net carbs.
Some only 30 net carbs.

So a good starting point is 15-25 net carbs per meal. Although some recommend as few as 12 net carbs per meal.
Choose your starting point and see how it works for your family.

Meat and fat have no carbs.
Eggs are pretty safe at 1 carb for 2 eggs.
A sandwich slice of sharp cheddar is 1/2 carb. Soft cheese sandwich slice is 1 carb.
Most whole vegetables are good.

Milk has 1 carb per ounce, whether whole, skim, or lactose free.

White carbs are the worse.
15 carbs is a serving.
Bread - 1 slice
Pasta, or Potatoes, or Rice, or Barley, or Oats - 1/3 cup. Cake or sweet cornbread a little less.
Corn, or Peas, or Lentils, or Pap, or Beans - 1/2 to 3/4 cup.
Small banana is 1 serving.

Cut out all added sugars in food and drink. Baby steps.

Cut out all white carb and replace with whole grain and high fiber carbs. Baby steps.

Diabetes friendly whole fruits, keep to a serving.
Blueberries, blackberries, raspberries.
Strawberries, avocados, half a peach, half an apple, half a pear, a small mandarin orange, a cup of watermelon.
Baby steps.

Most of my meals look like stir-fry, eggs, soup, salads, or some combination of the above. Baby steps.

Portion control, I plate all my food on a 7 inch plate before eating. Baby steps.

Half plate very low carb vegetables.
Quarter plate protein.
Quarter plate high fiber carbs or a serving of diabetes friendly whole fruit. Baby steps.

I walk 10-15 minutes immediately after eating to slow digestion, and lower the glucose spike. Baby steps.

A good starting point is 1 serving of net carbs per meal. If you limit carbs to 1 serving, then you have room for 2-3 servings of whole fruit daily.
And you can eat most low carb vegetables.

Start with one thing and keep doing it every day.
When you are ready, do another and keep doing it every day. Baby steps.

Soon you are on your way.
You got this.
Have a wonderful day.

Does this help.

Hi warriors,
Diagnosed February 2021, A1C 13.5.

I control my diabetes with right eating, portion control, Japanese science and medicine, exercise if your doctors allow, attitude, and a compelling reason to do what is necessary. I sleep 6-7 hours nightly, 8 is better. I do 10-15 minutes self care daily. Baby steps.

I test at least 4-6 times daily.
1) upon waking- fasting blood glucose number, less than 7.0(126) is good.
2) 2 hours after eating my most carb laden meal, 7.8(140).
3) before exercising, looking for 6.7(120).
4) before bed, 5.7(103), if lower I adjust, I hate hypos 3.9(70).

I am half Japanese and a recovering rice-aholic, I ate rice 2-3 meals a day my whole life. Baby steps.

Most of my meals look like stir-fry, eggs, soup, salads, or some combination of the above. Baby steps.

The Japanese medical mindset says get to the source of the problem and correct it, don't just treat symptoms with medications. Baby steps.

I plate my food before eating on a 7 inch plate --- portion control. The Japanese say 1/2 plate of very low carb vegetables, 1/4 plate of protein, 1/4 plate 1 serving of high fiber whole grain carb or 1 serving of carb friendly whole fruit. Baby steps.

The Japanese say to eat in this specific order. First 2 bites vegetables, eat slowly and savor each bite. Next protein, next carb. Repeat this order till done. The Japanese surmise that your digestion rate is set by the first 2-3 bites it sees. So digestion is slower flattening the glucose spike. Baby steps.

The Japanese also say to walk 10-15 minutes immediately after eating, redirecting blood from digestion to muscles slowing digestion, flattening the glucose spike. Baby steps.

Glucose spikes are the enemy and lead to many complications associated with diabetes. Such as neuropathy, retinopathy, kidney disease, heart disease, blindness, brain damage, etc.

Some of my go to very low carb vegetables are cruciferous - cabbage, broccoli, cauliflower, bok Choi, brussel sprouts, napa cabbage, Chinese cabbage, kale, etc. - and cucumbers, egg plant, zucchini, summer squash, some spaghetti squash, green beans, snow peas, sugar snap peas, mushrooms, tomatoes, carrots, parsnips, radishes, beets, turnips, rutabaga, asparagus, greens of all types including spinach, lettuces, collards, turnip greens, radish greens, poke weed, etc, young fiddlehead ferns, celery, green onions, leeks, chives, onions, garlic, parsley, mints, dandelion greens, endive, watercress, gourmet greens, ginger, cilantro, basil, some flower pedals like mints, pansies, chamomile and squash blossoms. I eat avocado too, it is 1 net carb per serving. Baby steps.

Beat down your diabetes monster one baby step at a time. I can do baby steps.

Be the Samurai Warrior you never knew you were.
You got this.
Never give up, never surrender, never ever.

Simple

You look at the nutrition labels (or get on google if it's a whole food like an apple) and figure out the calories and carbs (from the label) for the portion size you are feeding them

Lets say I want to eat some Cornflakes with 2% milk for breakfast

(labels below)

1 cup of cornflakes is 100 calories and 22.6 net carbs (according to the label) and add a cup of milk to that - 100 calories and 11 net carbs

If the child eats or drinks "nothing else other than water" then that breakfast would be 200 calories and 33.6 net carbs

Read a label, do a bit of math and the answer is there...

You really need to go to one of the learning classes. And for your child's sake, take them with you. That is were you will get the most info and your doctor can help you set it up. Hopefully you are in the US, otherwise, I may have toldl you something that is not available to you.