I'm in the beginning of my third year in a 3-4 year PhD program in the UK, in a STEM field.
Long story short, there is a misalignment of interests and skills between my advisor and me. My advisor is aware of the misalignment of skills but he most likely underestimates the amount of interest misalignment. My PhD hasn't been very productive, mainly because I'm not interested in the topic at all (not only the exact topic, I've become tired of the entire sub-field).
My advisor cares deeply about their students and has always been very kind. At the same time, I have struggled communicating disagreements because he has greater assertiveness than me. He is extremely assertive and I'm extremely unassertive.
I need to finish as soon as possible meeting the bare minimum requirements to graduate. How should I communicate that, taking into account that a) he is way more assertive than me, b) due to my lack of communication skills, he has no clue that this is what I'm thinking right now, and c) I really don't want to lose his respect and professional contact. I just want to graduate and move on and do something in the same field but completely unrelated. I'm grateful to him for the opportunity but I just need to stop doing this before going insane.
I'm on risk of burning out without having published much. Realistically, I think I could get to the very lower bound of publications of what's typical in the field and university during this year. At the same time, PhDs in the UK are not supposed to run for much longer than that.
Apart from the communication, I'm also wondering if you have any tips on guidance on how to execute a "rush exit". I'm totally used to academia times, so I understand that accelerating my graduation perhaps just means advancing 1-2 months the graduation date; well, every single day I can spare from doing this will be very welcome. I just want to graduate asap whatever it takes, even if the resulting thesis is mediocre.
Another possibility I've considered is to ask to move to a part-time arrangement and work on the side, officialy 50-50 but in practice doing more like 75% work, 25% PhD, but that might be unwise.