Is this a game you can put 20-30 min intervals into or is a game you usually have to put hours in at a time?
I play 2 hour days (an in game day takes 2 IRL hours). I fast forward certain actions and sleep and usually I can work an in game day in 30 min. So if you play normally 1 hour days you can for sure get things done in 20-30 min.
I play every morning like 30-60 min