Extreme behavioral difficulties after moving houses

My kiddo is 5. We just moved into a new home last Friday and let me tell you: it's been ROUGH. He acts absolutely erratically. Like screaming, running around the house, getting into EVERYTHING. And I mean "sticking his head through the cat door", running his go kart into the flower bed type stuff. He screams every time he is being redirected. He refuses to eat anything I serve (even foods he usually enjoys) and when I met a new neighbor yesterday he suddenly let out a random war cry and threw a toy shopping cart. Like...out of the blue. For no apparent reason. I wanted to disappear into a hole in the ground. Everything we tell him has to be repeated numerous times before he listens. I made sure to take him to the zoo today and give him extra attention.

He starts school next week and I am so worried he won't regulate until then. I have never seen him in such a state. Does anyone have experience with moving and erratic behavior as a result? Thanks guys.