I fixed for 5-years in December 2021 at 1.45%, at the time against my mortgage advisors' advice may I add! So got in there just before it all went to hell, hoping come my next renewal interest rates will have somewhat calmed down, but I'm also paying chunks off through-out the year, so my remaining mortgage loan should be well down by then anyways, fingers crossed!
Instead of paying off chunks you could probably have put that into something with a higher return and then used it towards end of mortgage term to make a bigger dent.