Many choose to self-represent up until the last hearing. The hardest part is knowing the finer points of law - what's admissible as evidence, how to cross-examine so that the questions and answers are relevant, what the formalities of the Court entail. You can attend hearing for family law matters at your local federal court to observe the goings-on inside the courtroom.
You can also fill the gaps in your knowledge with intermittent consultations for legal advice and community legal centres, legal aid and private lawyers. They, especially legal aid, can help with telling you what to file and what format it needs to be in.
Unfortunately, outside of Court, there aren't any options for addressing the contraventions of the parenting orders.