Stop focusing on this issue or thing. If you can't solve that math problem, just skip it for now and come back to it later.
Inf. Never mind!; Forget it! (shows impatience or disappointment.) John: I need some help on this project. Mary: What? John: oh, skip it! Jane: Will you be able to do this, or should I get someone with more experience? Bob: What did you say? Jane: oh, skip it!
exclam. Forget it!; Never mind! I won’t bother you with my question again. Skip it!