["My son goes to kindergarten in a week and I can't imagine him being gone through the day. It's hard to not be worried about how he'll be at school."]
He'll have a great time, though.  He'll make tons of friends and his days will be full of joy!  You will need some hobbies though.
My son goes to kindergarten in a week and I can't imagine him being gone through the day. It's hard to not be worried about how he'll be at school.