Sure. Benefit of the doubt to start. That said, here on Lemmy you should be able to edit that post and add a clarifying note without issue. So feel free to do that.

Maybe explain that you chose a source quickly without vetting it, you aren’t sure of the validity, so you removed it - and then remove the link.

You could also try to replace it. Find a credible source discussing the same and swap. Just be sure you make a clear note of the change in source and the reason.

Or, you can just delete the post to avoid confusion and repost.

Please consider this a friendly, early warning though. If you make no change here to this post and continue the behavior of posting from non-credible sources, those posts will be removed and you may be banned from participating in this community.