I wouldn’t pay for the program to make bi-weekly mortgage payments. Just make extra payments IF you understand what you are doing and it fits your personal situation AND you can afford it.

You need to look at your TRUTH IN LENDING statement, to see what your payments will be and when they change. They should be clearly indicated.

From your scenario above, I’m guessing that you have a 40YR rate with a balloon payment in 30 years.

Your payment includes impounds. Your payment will be $3018 for the first 10 years, then it goes up to $3460 for the next 30 years (Yrs 11-40)
OR
you have a ballon payment of $260,000 due after 30 years.

Sounds like you need help just understanding what you have now, without worrying about bi-weekly payments.

If you have any other consumer debt at non deductible interest rates, it would be foolish to accelerate your mortgage payments.

If you make payments of $3500 from now on, you will pay it off in 30 years instead of 40, saving yourself 10 years worth of payments or over $300,000 in interest.

Your “financial planner” has the advantage of knowing your overall financial situation. Did you FP advise you to get into this loan ?? Are you paying him to tell you to figure out what’s best for you ? WTF ?
I do this stuff for people for free.

It isn’t possible to “figure this out” with any mortgage calculator that I know of because they don’t allow for paying principal on an I/O loan.