Adjustments on W4

Good afternoon, my wife and I file jointly each year and owe thousands of dollars. We are trying to break even or owe a lot less, on our forms her wages are 92000$ and $10000 are federally withheld mine is $71000 of wages and 7500 fed tax held. We own a home with a mortgage, have 2 children in college. What should each of us withhold or adjust to be withheld? Thank you