Hi
@Twinkletoes078
I realise you're a new poster, so apologies if I haven't explained the below clearly.
It should be worth your while breaking even if not overpaying.
Your break fee would work out as about 0.2% per year for the remaining term. They've just reduced the rate by 0.3%, so if you refix you're immediately saving 0.1% per year.
Give the bank a shout and ask what the break fee is. You might need the cash up front for this (it'll be just less than 1% of your balance in your case if my calculations are right).
Now, if you shorten the term, you'll be contractually tied to that. If money is tighter than you thought, you won't be able to extend the term back out again. But it puts a discipline into it.
If you don't want to shorten the term contractually, then make regular overpayments when you can. They will calculate a break fee (if applicable) only on the amount of the overpayment. If you fix at the new rates for 5 years with AIB, they can only charge you a break fee if they further reduce their fixed rates (this is unique to AIB because of a clause in their T&C's).