Not sure that I can really add anything in here that hasnt already been said. Ive been PPS for a number of years now. The key that I have found is budget, budget, budget. It can get really depressing micromanaging your finances, but it is worth it in the long run.

As someone said, add up all your long term known bills and average them out. Pay a bit each fortnight, you can centrepay or just pay them direct. I found if I put the money aside into a different account it was nothing to just "dip" into there when something came up. Also budget an emergency fund, even if its just as little as $5-$10 a fortnight at this stage - it adds up and you never know when something will suddenly die.

If you have insurances, it may help to pay them monthly. Yes it does cost more in the long run, however if you dont have that money here and now then it too can help cut the costs temporarily. If you have health insurance - are you benefiting from the current level of insurance that you have? Can you drop it down a tier?

Different states do different deals, but generally, rego and license are reduced if not free - check it now as you can/could get a pro rata refund on these. Gas/Electricity (only one does it cant remember which) and phone also gives rebates.

Phone - PREPAY! No nasty $1000 bills. If you are on contract see what the penalities are for breaking, how long you have left etc and go from there. Also if its prepay then if you cant afford it then you just dont buy credit.

Budget your food, meal plan, and look at what you can buy homebrand and what you cant etc. DS has special diet requirements so costs are increased there, but we can skimp on some of the other "luxuries".

Are you still studying? You may also be eligible for Pensioner Education Supplement which varies from $30-$60 depending on study load, plus you may get reduced day care fees if eligible.

Skip the playcentre if you can, we make the most of our parks and free/cheap entertainment.

Pre-loved clothes, if you have friends with older children they may pass them down otherwise use your charity shops and there are even facebook buy swap pages now. I have bought things with their tags still on in both places. I also pay it forward and the things he grows out of go back to those places.

Honestly I get no CS so eventually did return to work casually. However we made it work for around 3 years without any extra income. Its frightfully hard but if you can make a budget and stick to it then it can open up more opportunities.