RC diary to driving down mortgage

Rideross

Hi

33 years old, coming to the end(Sept 2023) of a 5 year fix. I am aiming to pay off the mortgage as soon as possible(without paying additional fees). I have over paid 10% of the balance this year. First over payment since having mortgage. I wish I had started over paying sooner. I am not able to do any more before the deal comes to an end without incurring early repayment charges.

Property purchase price 200,000

Mortgage remaining 115,000 with 17-18 years remaining 

Assets cash / shares 60,000

I'm not 100% clued up on different mortgage types, but likely be looking at some sort of tracker that allows unlimited over payment. I will likely use 30,000 of cash to drive down the mortgage. 

I welcome any suggestions or ideas on best approach to drive down mortgage.

Thanks

RC