I am currently off work with stress, much of it due to work. I'm on medication and slowly getting better. Whilst off I applied for one job. I felt so unwell and rejected their interview invite. They were lovely and rescheduled it for another day. I still felt unwell but didn't want to let them down so somehow got through the interview- and was offered the job. It's something that I really want to do and am so excited. I need to hand in my notice at work but feel it looks bad to do it whilst on sick leave. How would you approach this please?