Oh my, I hope you’ve taken a break in those six years otherwise your dick/snatch must be rubbed raw. x3x
And to actually answer your question…it depends. Full color/shading, one character with an easy background probably takes a week and a half to two weeks. Actual time I spend on it though like in timed hours/minutes is something I haven’t figured out. I only dedicate like a few hours a night to drawing, and even then, I take lots of breaks. Yea, great work ethic right here. ^^;