NY taxation is fun! They tax your NY sourced wages based on the percentage of your wages that are earned from NY.
That being said, adding more income should reduce your NY percentage.
Revisit the NY return questions. There are a few and answering them incorrectly will result in your wife's wages being included.
Make sure you answer the "are all your wages NY sourced" as no and thus should give you the screens to allocate your and your spouses wages, and how much of those wages are NY sourced.
