Hey, I stuggled with this at first but now can do it whenever.
It did take me a while, but what i used to do was play the right hand note loudly and then just after I have pressed the right hand note play the left hand note but quietly. The two are not played at the same time, but then try to bring them together so one hand is louder than the other.
You also need to shift your body weight from one side to the other
I hope you understand that . There are probably far better methods, but that is how i remember learning
Ben