Realistically, after 6 months....HE could be anywhere he needs to be.
There is no timeline for this, and it has to run it's course.
The only thing you can do is work on you. And get out there and experience what life has to offer for now.
Concentrate on you, and your children, and take the focus off of him.
You will drive yourself insane if you don't. This is his path to walk, but use this time too. so that you can be the person that YOU want to be in life.
There are NO guarantees that he will come back.
There are also no guarantees that he won't.
Just find out who you are for now and let him spin in circles.
Find your inner peace to give yourself one more day, Then repeat that.
