Most authors I work with have and want to keep their day job, so this isn’t feasible time-wise.
Professional authors often write in 3-4 hour installments. However, writing is their job. They are putting in 8 hours on their pieces every working day. Most authors I work with have and want to keep their day job, so this isn’t feasible time-wise. Other people don’t have the creative energy reserves to sustain this without working up to it. These authors also revise, write blurbs, and do other author-related activities in their 8 hours.