Think of this as training. You will need to practice meal-planning and healthy cooking for your kid, and if you don't plan, you just won't have time to eat when the kid is an infant.
I recommend the book, Well Fed:
http://www.amazon.com/Well-Fed-Paleo-Recipes-People/dp/061557226X
It's a paleo cook book, yes, but you don't have to eat paleo to get something out of it. Melissa gives some really good quick and healthy meal ideas. She also has a good system for doing a lot of prep work for weekly meals on one day, and then most meals during the week take less than 20 minutes to make.
Also, frozen vegetable stir fry is super easy! Start with some of the bagged pre-made stuff from Trader Joe's. But then it's also easy to make your own, and it literally takes 10 minutes.
Instructions:
heat oil in pan at med-high
add frozen veggie mix
cook for 7 minutes
add an egg or two or some meat or fish or seafood
add some sauce from a bottle
cook until your protein is done (eggs cook in like a minute, and it ends up being like fried rice without the rice or moo shui)
Enjoy!