I can't do more than two days in a row. I do 5 a fortnight, and the days change every week, I've found it was too much doing 3 in a row (for me and Spock), 2 in a row is doable, but I prefer split, because it's all random anyway, we have no set routine for it to mess up with. Spock is pretty good at just taking it as it comes.
My nights were hard. I like the work at night, infact prefer it to during the day. The struggle is the having to sleep during the day, and not seeing sunlight for days, and worse by my not being at home and being in a little dorm room by my self with nothing but OUAT to keep me company and missing my family. Mum n dad were at our place helping dh with Spock, so my all my favourite people were hanging out and playing and laughing without me. But Spock just took it in her stride, asked for me but was happy with 'mummy is at work'. I have 2 more nights coming up next week, so will be easier than the 4.

Good luck with the interview MN