Many times we will come across trees that have been very stressed and experience significant die back. When it comes to pruning these the best thing we can do is remove all of the dead wood and leave as much live growth as possible.
This helps improve the circulation of nutrients, leaves more space for the healthy tissue to thrive and regenerate and removes the hazard of dead limbs that could break off and fall.
A recovering tree isn’t always the prettiest landscape piece but we do what we can with it. I’m reminded of an old quote, “an artist can only work with the canvas they’re given”.