Don’t worry, after the first three months or so you can start putting him/her to bed at a set hour, and if you’re lucky they’ll sleep for a while, which will give you a few hours every night.
And although this is a bit OT, I think people my age (in my 30’s) who are parents are fretting a bit over “spending time” with their kid. It’s like kids these days are supposed to get the attention of their parents at all times, which can’t be healthy either. We’ve probably given our son a bit too much attention during his first three years, and now have to teach him to play for himself, which he is finally able to do for a little while. I wouldn’t stress feeling like you have to spend time with your kid ALL THE TIME, it’s good to breathe too, for all parties involved.