Don't beat yourself up about accepting the job - it was the the employer's responsibility to paint a realistic picture of the duties and establish a good fit so as to avoid this situation.
Hand in your notice now and move. You can probably not even mention this role in interviews, because your previous long-term role is still recent. If you find another long-term job you like, you can just leave this as a small gap on your CV, or explain it away as some traveling time, sabbatical, etc. Leaving after six or twelve months is a bit harder to explain away and looks more like job-hopping.
Obviously be as nice as you can about this, offer to help find / interview your replacement, etc, and hopefully they'll return the favour by letting you get to interviews during the day and being flexible with your notice period.
Apart from the tricky issue of the P45 (if they still have those); A tax document that lists your previous employer and salary details, which you have to present to your next employer.
Hand in your notice now and move. You can probably not even mention this role in interviews, because your previous long-term role is still recent. If you find another long-term job you like, you can just leave this as a small gap on your CV, or explain it away as some traveling time, sabbatical, etc. Leaving after six or twelve months is a bit harder to explain away and looks more like job-hopping.
Obviously be as nice as you can about this, offer to help find / interview your replacement, etc, and hopefully they'll return the favour by letting you get to interviews during the day and being flexible with your notice period.