I'm of the opinion that, we should do our due diligence before we accept a job. We need to find out specifics such as ratios, hours, etc. Then we make the commitment to work there. Unless you've been lied to, I think you should stay for more than 6 weeks.
It's a common theme here, often a new grad who settles for the job they can get, who then wants to jump ship right away! I've seen different versions of this many times. I've heard various rationale, I hate nightshift , I'm not challenged on med-surg, I have too many patients in LTC, my coworkers are rude bullies, etc.
There are some extreme situations of course, but generally speaking I think it's unprofessional to bail out of a job so soon.