I've managed to negotiate the changeover without too much difficulty. The change in question is from a week of night shifts to evening shifts the next day.
I managed to stay awake till about half four then put my head down for a two hour nap which, as always, turned into a 10 hour sleep. I managed to turn over and sleep for a bit more fortunately.
Things plodding along. The usual tussle with bureaucracy, mixed messages from Sand and fight with revision. This week Sand was being nice and "missing me". Certainly got a funny way of showing it. To my shame I was a bit terse and abrupt (we were conversing on the internet, the only way we actually do communicate) but I was still a bit sleepy.
On a positive note:

I've got my tickets to see him. Birmingham and Manchester (couldn't quite stretch to London as well). No matter what happens between now and September, this will make me smile!
