Knitting is traditionally read as patient creation, one loop after another, and as care made into something warm. Dropped stitches stand for small mistakes in a long project.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.