If you really want to do this in the timeframe you need to, you might want to get a bit ruthless with yourself. I suggest that you keep an exact record of your spending for a month at least, exactly, down to the cent, what you spend, what you spend it on and when you spent it. Categorise it, food, travel, Phone, whatever, and at the end of the month, take a good, long look at it and some of it might surprise you. I don't mean any estimates, I mean an account exact to the cent and date. Figure out what you needed and what you didn't need. (€120 a month for ESB and Gas seems high)
The best way of saving is to not spend what you have. Any interest (though welcome) in this particular case won't be huge, so I'd suggest you concentrate on spending less, rather than earning more from interest.
Good luck with it.