I've been working on a pair of stranded mittens for just over a month now (6 weeks). I put them away for 2 reasons. I dislocated my shoulder about 3 weeks ago now and really couldn't knit for 2 weeks. I also had a problem with the ribbing being too long. it came to the middle of my forearm. I didn't know when I started that 2.5 inches of ribbing would be too much. I guess I should have guessed since most stranded mittens have tiny cuffs.
Today I finally said to myself "Self, you need to fix that mitten and make the other one. If you don't do it now, you never will and a lonely mitten is a terrible thing." So I undid the cast on edge and wasn't getting anywhere trying to unravel that. So I made a small cut about 2 rows before the length I wanted the mitten and picked up stitches from there. It gave me a manageable length for the mitten.
Unfortunately, I did this spur of the moment, so I don't have a before picture, but there are after pictures.
That's how much was cut off. It's about an inch and a half.
It still needs a thumb but I'm happy to be working on these again.