Ii dont know any. The ketogenic diet though is done to treat kids with epilepsy. I think you are looking for something similar like atkins I think.
I am a good few years out, I lost near on 50kg and still had 30 to loose and weightloss stopped. I have varying restriction now, some days none other days good. Anyway I regained 15kg, lost 10kg still another 5 kg to lose to hit my lowest, then I need to work on remaining 30kg. I think I can do it but like you, I too am looking for a dietician in perth.