How do pregnant women eat so that the fetus is not overweight, underweight?

In the last months of pregnancy, mothers absolutely do not use alcoholic beverages, gas, coffee …

Pregnant women should also not eat a lot of salt, eating too salty can lead to edema or increased blood pressure.

Women actively regulate the amount, type of food, priority of milk … help mothers and fetuses with a standard weight.

I’ve been pregnant for two months. Because for the first time, there is good news of motherhood, I am surprised, inexperienced in pregnancy nutrition.