Thanks Tallulah!!!
In this thanks giving break, I already find some change in my DS3's play. During the school day, he only write numbers and letters even at home, doesn't play with other toys. But in this long thanks giving break, he enjoyed playing with his toys, LEGO, and MagnaTiles! (which he like to play with before he start sch) So the 2 months sch already did affect how he play (his play is already more restricted than other kid, and it becomes more serious after he go to sch which gives him lots of writing worksheets)
He will start attend the new school tomorrow, hope everything will go well to him, finger crossing.