They say about 10-12hrs, I'm not working right now, (on disability) because I have cancer, hope to eventually go back to work, I'm so gle and have no kids, so don't have to worry about that, but I know tons of ppl that do it with families and work, just lots of reading and writing a paper per week right now. Lots research, just learning to navigate all the databases to find resources. I got federal financial aid but I'm about to run out, used it for my bachelor's and masters, so not sure what gonna do, it's expensive. Still not sir eif I made the right decision, but I'm going with it for now.
Feel free to ask away!