I won't sugarcoat this. Trying to work while taking care of a baby is usually a mess. You're exhausted. You can't formulate coherent thoughts. You feel guilty all the time because you're thinking about your baby while you work, and your work while you parent. You rely on that Almighty Nap, but it's unpredictable, and even when it happens, there are a hundred house chores waiting to be done.
You feel like you have two different bosses in two different worlds - and one of them keeps begging for milk.