Have you checked if you are entitled to FIS? You will be entitled to a payment if your weekly net income is less than €506 and you are working more than 19 hours a week. Please look into this as that no matter how little you may qualify for, you will still get a minimum of €20 each week.http://www.welfare.ie/EN/Schemes/BirthC ... s/fis.aspx
Also please apply for a Medical/GP visit Card. You should be entitled to at least a GP Visit Card and maybe even a full medical Card - all expenditure is taken into account childare, mortgage, petrol etc. You can check your eligibility here https://www.sspcrs.ie/portal/medapp/
If you have any loans from banks/credit unions get onto them to restructure your payments so you are paying a little less.
Get onto the bank about your mortgage, maybe go interest only for 6 months give yourself a bit of breathing space.
Try cutting back on anything you can if you can even shave €10/€15 off your shopping each week it will help.
Make appointment with MABs asap to go through all your finances.