Engineers shouldn’t be allowed to have biological children 
Even if both biological parents are engineers, genetics is weird, so your child might still be normal. 
So there is no manual, or a schematic. You have to work it out, over and over again, each and every day. When in doubt, err on the side of love. One day you will realize you really are a parent, when you want to pick up your kid and toss him out of a window. Then things get worse from there.
From another thread, let me recommend this: Don’t sweat the small stuff. What kind of diapers you use, whether you let him eat a little more, and all those minor things will soon be forgotten.
The first year is pretty easy. You won’t be able to sleep, and you’ll be visiting the pediatrican on alternate days. Big deal. In return you get someone who things you are the morning and the night, the alpha and the omega. He/she will want to do anything you do, and anything you want them to do. And before long you will be doing anything they want you to do.
The books are telling you that you already know what you need to know, because you do. If the kid is hungry, feed him. If he’s sick, take him to the doctor. And the more complex stuff is unknown to everybody. Look back on your own parents. If you had good parents, do what they did. If you had bad parents, do something else. As for precision, well, I understand you are an engineer, but you’ll have to deal with it. There aren’t many real solutions, just temporary fixes.
Congratulations, best of luck to you and yours. Stop worrying.