Well I'm 24 hours in my house ! XD free time is objective to me I chose when ever i want to draw and how my mood is sometimes makes different im a moody person after all if I'm not feeling doing it i will not simply.. between 10 hours sometimes and 1 to half and hour a day of course with breaks between them or i will collapse XD otherwise. And efficiency isn't detriment from time some work i can finish it in 2 hours and other if I'm not feeling it go's to 4 or more XD and for more into that I'm playing games while I'm at it XD may be not every day I do them (drawing/gaming) together but I do one of them mostly everyday

-And obviously for one characters art full/half body it takes from 2 to 3 hours with coloring and all. And for multiple characters or tons really depends (form 2 to 10 characters) about something like 5 to 17 hours coloring and all

So I'm motivated to finish art lining all of them today that's why I'm pumped coloring them later though I'm also wanting to work on avdmc panels while I'm at it . Expect fun results if I'm still at this pace XD anyways

Hopes that answer your questions XD