Can I change the length?

hi, i’m new here…just joinedi really need some advicei’ve knitted the front of a vest but just realised that i want it longeris it possible to undo the cast on row & knit down?thanks for any help you can offeri really don’t want to rip ot out! :shrug:

It may be easier to cut the CO and knit down from there, or you could pick up stitches and knit an extra length. If there’s ribbing another way is to cut a stitch just above it, put the body sts on needles and knit the extra then either graft the ribbing on or reknit it.