One of my N-day meals is bigger than the others too - for me that's lunch which I eat at the canteen at my workplace (they usually have enough variety that I can find something which is both reasonably healthy and enjoyable most days).
I have a standard plate of food and a dessert plate of cut-up fruit. If the hot plate is too full I leave some food on it (provided I am not too stressed out or distracted!) otherwise I get sleepy and possibly a stomach ache in the afternoon. After only a few weeks on No-S, your stomach gets smaller and going overboard at meals becomes uncomfortable.
For breakfast: a little muesli or bread (carbs), a piece of fruit, a little yogurt (proteins), herbal tea.
For supper: usually a smallish plate of microwaved veggies and fish or cold meats, with bread.
These two meals are smaller than lunch, but I find that the difference is decreasing as I get more experience under my belt.
Errrr I am rather lazy so I don't cook much as you can see
In your case I'd say that supper is your biggest meal? So it's a little strange that you need to snack afterwards - are you bored or stressed in the evenings? Anyway if you drop the snacks you will probably be hungrier in the morning and then you can have breakfast with your kid and demonstrate good eating habits to her
So how about breakfast when you wake up (you don't need to have hot greasy food if you don't feel like it! Fruit is both enjoyable and good for your health) and a light lunch at 1pm then supper at 6-7pm. Depending on how you feel after supper, you might want to go to bed earlier so you are not too tempted to snack .
Anyway don't worry - dropping the snacks tends to make meals healthier and more balanced automatically, both in quality and quantity. It might not happen instantly though - you need to experiment in order to find what works for
you. That's the NoS learning process.