I am also a military wife, We are in the 45 day marker, of him scheduled to be home, but you know the military, that could change.
He is susposed to be home right before Christmas.
We have a 7 year old little girl , who this has been very hard on, so I have started to prepare her for the event and things she might expect but might not happen.
But like most of the others are posting, take time, be patient, let him and your little one find the medium ground to start the bonding process, also,
His unit , should be having a Briefing about things to expect, and things to help. They get the same one before coming home.
Being on the Family rediness team in my husbands unit I have found it important for the spouse to go and get all the information, since the soldiers coming home are tired, anxious, and just can not wait to get home , half the stuff said does not sink in. another thing to consider a little down the road for you and him.. is the Married Couples retreats that most of the Chaplins of the unit can give you information.
Sorry for rambling , but I hope it helps
Please feel free to contact me if you need anything, and i mean anything.