If it is definately ct, then the best thing you can do is wear splints overnight. Get them from a chemist or a physio. I found that by wearing them all night my hands were good through the day. Although occasionally I had to wear them thru the day too... If you splint and it doesn't give any relief then it's possibly not ct.

Do all your fingers tigle/ache? From memory, ct should not affect the pinky...