I had my son and one other little boy for three months. I felt the same way - always guiding and shushing and "nit picking". Now that I have two more kids, I find I'm not doing that so much. I have an older one now, 2.5, and I do find that I am saying a lot of what you said: slow down, no running in the kitchen, watch my toes, those toys are not yours, they're mine and so on. He's just getting accustomed to the new house and the new rules, he'll adjust, and so will yours.

I feel the same way about not wanting to disturb my son and his toys, after all, this is why I am doing this, so I can be home with him and I want him to be happy, but toys break, and my son has to learn too, he can't expect to get away with things that the other kids don't.

When the new one starts, you won't be nit picking so much, and you will calm down. Soon enough, you will.

PS: I still constantly watch the clock lol