[akasohappy]

I know that sometimes sleeping all the time is a defense mechanism to help children adjust to a new situation (in reference to his sleeping all the time upon homecoming), but he very well could have been sick also.
The more sleep he gets the better he is going to sleep.
The basic building block of attachment is trust. He has to know you are going to be there for him.
I know everyone has a different opinion about CIO, but I think he has not been home long enough for that yet.
We had the same sleeping/napping problems with Kate and it was a struggle for at least 6-8 weeks.
I picked her up and rocked her, or held her everytime she needed me too.
I couldn't get anything else done.
I thought I was really going to sabotage her sleeping habits, but it didn't. She is a great sleeper now.
She was a great sleeper in Guat. too for her FM.
I think she just had to get comfortable with us.
You have WAY more experience than I do raising kids, but this is just what worked for us.
I do know how difficult it is when they won't sleep, but are so tired they are miserable.
Good Luck and congrats on bringing your little man home.