the goal is to reduce monthly payments for this mortgage loan:

- pv: $300,000

- down payment: 5%

-interest rate: 1.5%

-loan term:15 years

two solutions i know are increasing the down payment and extending the loan term. i need one more solution (other than the ones i listed), the interest rate is already pretty low in my opinion so im not convinced that is the other solution either. can you suggest another way like refinancing maybe? can you go into detail about the refinancing process so i can understand how it would achieve a lower monthly payment? thanks