@lepea the RFI in Feb was for:
Police checks
Statement on relationship from both myself and my wife; and
Our son's birth certificate
the RFI in April was for:
evidence of relationship 2 years prior to lodgement, although this was already provided; and
financial documents
I was quite surprised at the speed in which they made the decision, didn't expect to get a response until after the lockdown if I am to be completely honest.