I'm not really sure because I didn't track my hands but I can give you a rough estimate of the number of days I played at each level, by the end I was 6-tabling FR, and probably played about 3-5 hours a day.

2NL: 5 days (I started with $100, which is overrolled for 2NL, so I just played to see if I could beat it)
5NL: 20 days
10NL: 30 days
25NL: 60-70 days, I broke even for probably the first 50 days, lost for another 10 and then went on a sick heater.

All of this is pretty irrelevant though, it's just to show you that it's possible. Just play.