Jojo's two weeks after We All Fall Down

JoJo hangs up the receiver, and walks out of the front door of the radio shack. Heading down the hill from main street to home, he just cruises on his skateboard. He rides in the middle of the road, never paying any mind to cars on the road, or slowing or stopping for cross roads.
Once he reaches home, he walks in and sits on the couch staring at the powered off TV. Here a montage begins, we see the sun go down, late into the night he goes from the couch to his room, the sun rises and he leaves the room. Moves to the couch where he sits and stares at the TV. The day passes minor steps away from the couch. Again late into the night he goes to bed. And this repeats over and over… he doesn't eat, he barely sleeps and spends most of the day staring at the TV.
On day 4 of this (Tuesday), the montage slows for the sunrise… Jojo walks out his room with a bat, strolls over to the TV and smashes it. We resume our montage, and through the same routine with the smashed TV and a bat on the floor.
He doesn't go to school, he doesn't leave the house at all and he doesn't eat. When Fish tries to find him at his house (as above him not showing up somewhere would be odd). The lights are off. There is no answer at the door. The mail is uncollected in the mailbox. From outside there is no sign anyone is home. 
After a week, Rex comes to the house and sees the house looking abandoned much like Fish does. JoJo still sits on the couch and ignores everything. Someone from the school comes to check in, since JoJo is much more careful at skipping school than this, they leave a letter attached to the door. 
Inside we see the fridge wide open, some of the doors ripped off their hinges (including the door to his parents room) and the bat embedded into a wall. 
Two weeks after the event, JoJo walks out of the house. He walks with his fathers leather jacket on, no skateboard with him, down the road towards the mill. Before he turns the corner, and loses sight of his house, over his shoulder we see the flames break out of the windows. The house is engulfed in flames and as he moves away we lose sight of it.
He stops at the mill, right on the edge of the river overlooking the raging water rushing past. He stands for a few minutes. Steps back from the ledge and begins to walk away from the mill away from town.
Fish places her hand on his shoulder, he stops and turns to face her