I'm a second year PhD student in Computer Science in the United States. I started on a research topic in my first year of PhD. There are two advisors jointly involved in it and I don't get along with one of them at all. On the other hand, the other one has been extremely helpful as my mentor.
I want to switch research areas because I'm not excited about the work and I'm starting to dread my meetings with the PI. But my advisors are counting on preliminary results for applying for a grant. How should I approach this without burning bridges?
(I apologize for the poor grammar, English isn't my first language)