Baby book has entries for week one and week two. He's nine weeks old.

A friend gave us one of those baby books with pages for first smile, first bath, first outing and so on. Week one is beautifully filled in. Week two has a date and half a sentence. After that, nothing, though he has done everything on the next six pages. Did anyone keep one going? Or did you rely on phone photos and fill it in later? I'd like something he can read one day. I just can't write it at 2 am.