If I post a question and receives and answer. Then, in general, I use to upvote if it make sense to me and accepts the answer if it is apt to the context of the question.
But I cannot say whether the answer is correct or wrong.
If once I get realize that the answer may be wrong. I think it is okay to remove my upvotes or acceptance in order to not endorse to new users that answer is correct.
Is it okay to do so? Or should I not upvote or accept till I am completely sure on the answer which may take a long amount of time.