You know, even if your husband wasn't going away, your son would be developing negative behaviors. Say good-bye to those most precious months, when they can walk and almost talk and are still so sweet and cute. It's time for him to assert himself and be more demanding and cocky. I know, it is so sad. but look ahead, he has to become his own person and life keeps changing. Telephone conversations, digital pictures over the internet of him at grandma's, a book about grandparents dying, those are some ideas for easing this time and you will get many more.