I go through phases but I'd say weekly on average. Sometimes I don't get so much as a doodle out of my brain for weeks, sometimes I draw multiple times in the same day. It depends more on how creative I'm feeling than on how much free time I actually have.
I wish I could say I drew daily but I'm a lazy bastard that drinks too much but I'm getting my drawing groove back so it should be daily from this point on.
I'm even gonna actually upload some shit within the next week or two. And when I mean some probably a good dozen pieces varying from concepts to some almost finished pieces. haha I'm gonna stop rambling now lol.