why not train your son to sleep thru the night, and wean him off being carried to sleep.
your son is still very young, easy to train.
like that you wont feel so exhausted.
if possible, why not hire a maid? she can help to do house chores.plus, since your parents and parent in law will be arnd to tc of your son, your maid can also help out to tc of your son, at least you dont have to worry cos someone is supervising your maid.
its cheaper than infantcare n nanny i think, cos i think foreigners not entitled to the gov sub right?