Just here for support.
He sounds just like my DD (4.2). She is also in montessori FWIW.

I'm pulling my hair out with her. She literally says she just wants to play (this is OK of course) but then won't go do it!!! She won't even play. She wants me to play WITH her CONSTANTLY. Or she wants her 20month old sister to play with her but she is so bossy and hyper that my 20mo is just trying to get away from her half of the time. ugh. Crossing my fingers its just the age but she has been so so high intensity from the moment she was born, I'm not convinced it's a phase. DD(20 months) is way calmer and enjoyable right now. I love love love DD(4) but she can be so draining!!!