Mortgage question

Hi. My wife and I got a 26 years house mortgage (on her name) 28 months ago with UOB and paid the monthly installments x 3 - 4. Also we put in some extra chunks of money from time to time when we had it.

Basically, we paid off 50% of the whole mortgage already.

Based on this situation, do you think we can go to the bank and ask if the installments can be decreased proportionally or are there any other options (for example decreasing the number of years or whatever)?

My wife's attitude is to not ask anything from the bank because there are no any options. I mean I can push her we go to the bank together but I wouldn't like we go there and whatever the bank response is, my wife just goes back with usual kaaaa kaaaa approach so they get rid of us easily without us knowing there are some options actually.

Thank you in advance.