WI's can be funny things - I'm struggling to get back to target, and a few weeks ago had a really 'good' week, and STS.
The next week, feeling thoroughly demoralised, I had a couple of 'wobbles' - and lost 1.5lbs and shared SOTW!!!
I'll have missed 2 WI's next time I'm on the scales, partly due to another holiday in Cornwall, but I've pledged to be back at target by Christmas...!!!