I got my masters degree years ago while working full time. After the first year, my wife got pregnant. I kept working and studying. Then we had our first born, still working, still studying. Then we had our second, raising our one year old, still working, then finally finished. You learn how to allocate time but when the studying is all over, you wonder what to do with all that extra time.
You can do it. It's just a matter of how bad do you want it.
I had quit school after one year, and my wife talked me into going back after we got married. We had both of our kids while I was in college, with both of them being born right in the middle of final exams week two years apart. I remember many evenings studying a book while holding a baby.