Thank you, brother @bleujay, for the great comment and great question. I think I spent a total of 30 hours working during blackouts, which lasted 3-4 hours twice a day, over several days, but it's hard to count exactly because I periodically switch to other drawings, it's easier to catch inspiration by the tail, sometimes you need a change of scenery. :)
Have a blessed evening, if, like me, you are having an evening now! But may other times of the day bring you joy!