I cannot speak to how you live your life, but I find myself very invested in my job. This is in general a good thing (I think) as it provides me the mental state to try and do the best job that I can as working hard is easy. The question you have posed leads me to believe you may feel similarly.

That said, my two boys (5 months, 6 years) are the most important thing in my life (along with my wife of course). My second son is 5 months old now and I just took 3 months off to care for him. I wish I had more time, 2 years might be enough. When my first son was born I only took two weeks of vacation, which was not even close to enough. It is something I still regret.

While I do not like to give parenting advice, I can say with certainty, you should take as much time as you possibly can. Don't think about work, don't look at work, try not to worry about work, it will be there when you return. As a mother, spend time to recover physically. No matter how the child is born, the process is very physically taxing and your body will change a lot in the following weeks/months. Make sure you are keeping an eye on your mental health, postpartum depression is not something to take lightly. Most important, try to relax (it is hard) and just love your child. The first months are wild.