Further update for anyone who saw my previous posts:
I haven't gotten the message telling me I've been accepted, but my payment in my Centrelink online account has swapped to Disability Support Pension. This is such a huge load off my shoulders. I finally made it.
Payment schedule is odd, my "last payment" listed says 13th of July, but I received my $33 telephone allowance just after midnight tonight, which is odd since that was meant to arrive tomorrow. My first listed payment(the 13th of July "last payment" one) also has reduced pension payment but 3x the rent assistance and pension supplement on it. Very weird.
Still have to wait on Centrelink's letter to see if I have any mutual obligations, but I'm so happy. I think I'll get some backpay to my claim date, but some people have said online that they only backpay if the claim took over 6 months, or had to be appealed. So I'm not sure. Still. Happy.