Don't send anything unless you are asked for. They will ask for anything they need. Anyway, your parents and siblings don't count as "family members" in this PR application context.
From the application guide...
If your spouse is the sponsor in the application, then it doesn't count as a family member. So unless you have children you shouldn't need to submit anything else.
This is good news for you, just standby and wait a bit more

What is your timeline?