Two weeks is standard, but I have quit jobs and left in a few days.
Yes, it can feel like a romantic break-up, but really you don't owe them anything. They have to pay you for all the work you have done.
The only thing you are doing by leaving in a few days rather than two weeks is potentially hurting their recommendations of you. Which isn't much since it sounds like you have other experience in the same industry.
And, honestly, even with a whole two weeks, it's not a guarantee that you would get a positive recommendation anyways.
And finally, they legally can't trash you for other jobs, they can just withhold a positive recommendation.
Yes, it can feel like a romantic break-up, but really you don't owe them anything. They have to pay you for all the work you have done.
The only thing you are doing by leaving in a few days rather than two weeks is potentially hurting their recommendations of you. Which isn't much since it sounds like you have other experience in the same industry.
And, honestly, even with a whole two weeks, it's not a guarantee that you would get a positive recommendation anyways.
And finally, they legally can't trash you for other jobs, they can just withhold a positive recommendation.