Facing your due date

My husband and I lost our mono-di twin boys at 16 weeks with delivery at 17 weeks on September 28. If our pregnancy had gone to plan, they would have been born on February 15. As the date draws nearer I am just having a lot of emotions. I feel like my family has all moved on and I don't think they realize that this really significant day is approaching. My brother's wife is scheduled for delivery of their first son together on February 11 and my folks feel like we should be focused on the joy of their pregnancy, but being happy for them doesn't erase how broken I feel. My best friend is due with a baby boy on March 1. Seeing two healthy newborns to people I love is a miracle for them but two newborn boys at the time when I thought I would have two newborn boys is gutting. And as it is my brother's first child and my best friend who are having the babies I cannot easily distance myself from them til I am ready. I can't miss my nephews arrival or be an unsupportive friend but as February draws nearer I just don't know how to face it.

Does anyone have any advice, stories, or commiseration on how to cope with the milestone days after a loss?