How to negotiate for part-time remote work

I'm planning to put in my two week notice as I have enough savings to live comfortably with my SO in NYC for 2 years without a job.

I'm pursuing a career change once I'm out in NYC. It'd be great to have cashflow if I can negotiate part-time remote work. For those that did this, how did you approach your manager and what position were you at the company? If they say no, I'm quitting.

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