Well so much for that 'good idea'!

Apparently my levels are now normal, so no increase in treatment.
The doctor glanced at her screen with the look of one who sees it in writing, so it's official - the fact I generally feel under par doesn't seem to cut any ice! However she did say it may take a while to settle down, so it seems I may have a course of appeal. She also asked whether I'd had one of the many bugs that have been going the rounds and I said 'no', but when I thought again this morning, I realised I'd had a mild dose of one, probably close to the time I felt most tired.
I am also going through the usual mid-summer 'can't sleep' cycle so no wonder I feel tired. I've decided to get more sleep and see how that helps.