but the requirement is 6 months, not 3 months rainmaker, and just because you got your visa sending less than you was required to, doesn't mean everyone else would be so lucky.
as always send what your asked for, or at worse you risk your visa being refused, at best you'll get your visa and in the middle they'll ask you for the other 3 months, but this will cause a delay in processing your app
go by the rules, and you should be ok, I've applied for more than 6 visa's, got each one by doing what they asked, and i don't own property of my own, never had much savings or a well paid job