Hi,
Don't worry too much about your out eating habits relapsing, you are probably slightly addicted in the same way a beer lover loves beer or a gambler loves to gamble so a relapse is normal. The main thing is you are heading in the right direction. (nobody is perfect)
Just push through this time, it will get better. You are doing well with a ppor and ip (I dont know your age, I am assuming in your twenties?) do whatever you can to hold onto these two properties and you will be rewarded in the future.
If you need extra cash, sell some stuff lying around on ebay. I used to do this and that grew into a small business that my partner runs as a sideline and is terrific for cashflow now. Another option which would be good is to re-valuate your properties and use some of the equity in your offset account to give you some breathing space. Remember this will probably be the hardest time of your investing portfolio so stick in there.
In a couple of years time you will look back at this time and feel a sense of achievement. You are in a good position, just get the money under control.
I have a 31 year old sister who is paying $400 a week on rent and does not earn a great deal. Personally I cant see it getting any easier for her as rent will always go up, she will struggle to save for a deposit for her first place and her income will not go up by lots. You are in a much better position to take control of your life, just ride the storm, do whatever it takes to hold those two properties and you will go well.