Michael was using the monitors (despite it being daytime), he was watching everyone through the monitors, trying not to think about something else that was irrelevant or upsetting for him, Michael had always told everyone that he would rather not be interacted by anyone so he was often seen alone, Michael was tired, not just from the night guard job but also because of his nightmares and looking for circus baby's so he could find his sister and at least have some closure
Michael occasionally yawned and ate something from his lunchbox, waiting for anything interesting to happen besides the anamatronics performing or the people moving around, but today was pretty slow due to it being a week day (a majority of the kids were in school and even when they were out, they'd be too tired to go to Freddy's)