Hey Flake.
I can't think of anything to say it suggest that hasn't already. What I do know is that you get one shot at his thing called life. Yes you made the choice to return to Aus, but you did it in the hope it would give your family a better life, and you did it like mothers do, at the expense of your happiness.
I think it's good that you've given the situation time, perhaps you could use this period to concentrate on you and do things that make you happy. Yes of course, son is number one priority, but doing stuff that makes his mummy happy can only be a good thing, right?
The very bestest of luck x
If I can make just one person smile, then I've made a difference.